Set a Page file with the same no, Ie min = 1024, Max 1024.
This way, the HDD head will spend less time going through the diff part of the HDD to get page file data. But you need to do a defrag and cluster the page file together.

For gamming wise, i believe a upgrade to a DX10 cards seems to be the way to go. Currently there not any DX10 AGP version so you might hang ard. Unless u die die want it now, the best bet will be ATI X1950Pro series card. Check to make sure u have enough 'juice' in ur power supply 1st before embarking on any purchase.

Try looking ard the 2nd hand market for good deals on DDR rams, it better that way.

Cheers~