Hi I am using SW2007 and am working on a assembly of 100 parts . When working on the assembly I can only open one or two parts, when things start to slow down concidurably.Then a message box pops up and says I have insufficient memory and then the program closes. I have a new computer with an a Athon 64 processor 3700+ with 2 gigs of ram the vidio card is 256.Not quite sure what memory I would be lacking?. I would appreciate any help Thanks