I have to say I am wondering why you want to create .rim files, but, to help you out, here's a few links to some help pages:
Top 10 DOS commands
http://www.computerhope.com/dostop10.htm)
Microsoft Windows XP Command Prompt reference
http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/ntcmds.mspx)
These are just the first two hits on Google (
http://www.google.com), but I checked them out and they're pretty good.
One thing to know is that paths in Windows that contain spaces often need to be surrounded by double quote (") marks. Some programs/commands are smart enough to parse paths with spaces in them, others are not; you can usually play it safe by putting the quotes around a path. The reason is that spaces are used to separate elements of a command (the command and its various parameters), and the first space in your above path makes windows think you are issuing the 'C:\Documents' command with 'and Settings\Tara\My Documents\Downloads\Working\rim32_build' and 'lev_m40aa_s.rim' as parameters. The form is just fine (if you add the double quote (") marks), specifying the explicit path to an executable in the command, but it makes for lots of typing. :) It is often easier to change the current path (what you see before the ">" prompt) to the directory where the executable exists.
So here's some directions that might make this easier.
They assume that:
[list]
You're logged into a Windows XP session with the user id 'Tara'
You've created a Downloads directory (folder) inside of your My Documents directory
You've created a Working directory (folder) inside of the aforementioned Downloads directory
You've placed a copy of the rim32_build.exe file in that directory
All of the files you want to put inside of the .rim file are also in that same directory
1. Start up the command prompt: Start | Programs | Accessories | Command Prompt or 'run' the cmd.exe from Start | Run. (When I set up Windows on a PC, I Contol-click-drag a copy of the Command Prompt item from the first location above to the Start Menu, so I always have it right there.
2. Assuming you're still keeping your files in the path show in your prior post, type
cd My Documents\Downloads\Working. This command changes directory to what you specify. Fortunately, Windows XP's cd command knows how to handle paths with spaces in them; earlier versions of Windows required you to enclose the target path in quotes.
3. Just to check, type dir to see what's in the directory you just changed to, and verify that your files are indeed present.
4. now type rim32_build lev_m40aa_s.rim. If you're set everything up as described, and I haven't forgotten anything, you should end up with a .rim file.