Solution
Hi, I got a reply from somewhere else, so for those who are curious, basically a single sided RAM module has one bank, a double-sided one has 2. I think current 256MB modules are one-sided, 512MB ones are double (Corsair ones certainly are). So my motherboard can take one 512MB PC3200 module or two 256MB. Also 2 512MB PC2700 modules or a 512 and 2 256's. Hope this has helped some fellow ASUS owners!
Hi, I got a reply from somewhere else, so for those who are curious, basically a single sided RAM module has one bank, a double-sided one has 2. I think current 256MB modules are one-sided, 512MB ones are double (Corsair ones certainly are). So my motherboard can take one 512MB PC3200 module or two 256MB. Also 2 512MB PC2700 modules or a 512 and 2 256's. Hope this has helped some fellow ASUS owners!