using win xp mce 2005 on 512 mb of ram. I have 77MB available of memory and my PF usage is 390mb. Does that mean if I added another stick on 512 mb ram, i wouldn't have a page file and hard disk would stop clicking? Using toshiba m115-s3094 w/ core duo. where's cheapest place to get memory? Should I add 512 or add a stick of 1gb?