Ok, I'm running Windows XP Home, and I just installed Litestep, and it changed my shell and whatnot, now what I'm trying to get to work is the theme called 'nonstep' (http://www.customize.org/details/17531) and it doesn't seem to be working.

Now I'm rather n00bish at this, but if you guys could help me out here, by just telling me exactly what I need to do, that'd be great. Thanks

That's the theme I'm using now, go the their website for the latest version at http://nonstep.litestep.com/

Edit: If the fonts don't look right, read the FAQ at http://nonstep.litestep.com/index.xs?id=documentation#faq to fix it.

There are instructions to install themes at o-t-s.sf.net

remember, read the docs :)