I had already started on this when I was ninja'd by AC. Since it's a bit more detailed, I decided to post it anyway. A few points were shamelessly copied from AC's post (Sorry AC
Ok. Lets start with a little walk through on installation of the core game and your first OXP on Windows 7 and Windows Vista. (For the benefit of others as well)
First, download and installation of the core game (Oolite version 1.76).
Download Oolite from http://www.oolite.org
download page here
When you accept the download dialogue you will either be asked where to save it or it will just start, all depending on your browser setup. If you are asked
where to save it, please make a not of the location. If it just starts to download you will normally find the downloaded Oolite installer in your download folder: (Should be under favourites in Windows Explorer or you can follow this path: <C:\users\[your user]\downloads>
When you have found your downloaded file, please double click on it and accept the administrator rights dialogue that pops up. The installation process is largly automated.
The default path for installation on Win 7 and Vista is <C:\Oolite>. Unless you know exactly what you are doing, please accept this path when the dialouge pops up and continue.
Run the game by going to the Start Menu. Go Start - Programs - Oolite - Click on Oolite, to make sure that everything works.
2.3 In the start menu - Programs - Oolite folder you will also find shortcuts to the documentation, screenshots folder and the expansions (OXP) folder.
Oolite should now be installed and working. So what have we got so far.
The core game is installed in <C:\Oolite>
In the <C:\Oolite> folder you have some additional folders and files that are of intrest.
File - OoliteReadMe.pdf - Basic instructions and more. Go here first.
File - OoliteRS.pdf - The Oolite reference sheet. Your key to game control and more. Please read
File - AdviceForNewCommanders.pdf - A narrative providing a basic "set the scene" and introductions for new commanders
There are several other files in there, but ignore these for now.
Folder - <C:\Oolite\AddOns> - This is where your Oolite expansions go. So you would put your OXP-folders in here. I will cover that later.
Folder - <C:\Oolite\oolite.app> - This is the main game folder. For now there are two things in here of interest
Folder - <C:\Oolite\oolite.app\oolite-saves> - In here you will find your save games and also any screen shots you take will be saved in the <snapshots> sub-folder in here.
Folder - <C:\Oolite\oolite.app\Logs> - This folder will be empty initially, but will eventually contain two files. <latest.log> and <previous.log>. This is where Oolite is storing information about what it is doing while running. Open Latest.log using Wordpad and, amongst other information, you should be able to see the list of OXP's the game is loading when starting up. You can check this way whether your OXP is loaded or not. If you get into trouble with your Oolite installation for some reason and ask for help on the Oolite Forum, you will be asked to paste the content of the <latest.log> into a post on the forum. It may well be worth making a copy of this file when things go wrong, as the logs are overwritten. Only the last two are kept.
For downloading and installing OXP's the OXP list on the Wiki
is the best place to go. You will find a list of the available OXP's on the [wiki]OXP List[/wiki] and their development status.
Download your OXP. Again make a note of where you save your download.
For example's sake, we will assume that the OXP you downloaded is called GreatShip.
The OXP will most likely be a ZIP file archive like <GreatShip.zip>, so we need to extract the OXP to install it.
Go to your downloaded OXP and open the archive. XP, Vista and Win 7 will do this if you double clik on the zip-file, or use any other compression utility of choice..
You will find a sub folder in the ZIP-file. If it has an .oxp extention like this <GreatShip.oxp>, this is what you want. If it doesn't have a .oxp extention, double-click on the folder in the archive until .oxp folder presents itself.
Next extract and copy the entire <GreatShip.oxp> folder to your <C:\Oolite\AddOns> folder.
The same procedure can be repeated with all other OXPs, just substitute GreatShip with the actual OXP name for each one of them.
Most if not all oxp-archives contain a readme file. Please read it carefully, as it will contain information on any dependencies and/or conflicts. Some oxp's are dependant on other oxp's to run, and some are incompatible with one or more oxp's.
Start Oolite, and you should be up and running with your OXP's active.
Lastly, if you need help, please ask on the bulletin board. You are sure to get an answer fairly quickly.