The easiest thing is to go to a website for your printer and simply download the latest driver.

BTW, 3-4 Gb of RAM should be enough.

Some other thoughts:

check for any add-ins. Often these are badly written and cause major headaches. Try disabling ALL add-ins and see if that makes a difference.

http://office.microsoft.com/en-ca/wo...010354315.aspx

Does your document has a lot of graphics? That can cause problems, although you have to have a LOT.