> also, I have Windows 98, and just read that I should be using a lower version of the Mixer, to avoid it being glitchy, is that still true, and if so, where can I get the lower versions?

For RA2 modding, just search the web.

The most stable version of the mixer (unless Olaf cleaned up the bugs in 1.28 without telling so) is 1.21, available somewhere on this site:

http://www.ra2faq.gamerzvilleuk.co.uk/

meselfs himself!