I have 640MB of RAM and Gigastudio on Windows 98. I heard Windows 98 has a problem with >512Mb of RAM and that tweaking had to be done ? Can someone tell me what to do?

Also, can someone tell me how much instruments can I load in Gigastudio , in terms of megabytes? I want to know if I have to buy more RAM.

Btw, I use Gigastudio 2.2 (I reinstalled all my audio stuff this weekend, so the windows is a fresh install with Video/Audio Drivers, Cakewalk SONAR, GigaStudio 2.2 , and Soundforge).