i have a problem with ac.11 version
i installed it and i can work because even in a new project when i create a wall for example it goes as if snap is on i dont know how to say it
i have a desktop computer 2gb ram XP SP2 AMD 64 3500+ and ATI RADEON 9600
Um, maybe something is getting lost in translation here, but if walls (or anything for that matter) are jumping to Grid Snap...hit S to switch it off.
Is that even close to what you are asking?
I have a hard time believing that you need to buy a new video card at this point.
EDIT: Also, obviously, you should verify latest video drivers are installed.