Can anyone tell me how to tell what pin my memory is I need to get like another gig in my computer and it has DDR2 4200 memory but I dont know how to tell which pin it is.

what motherboard do you have?

I dont know its a dell

There is a thing on the kingston site that asks you a bunch of questions about your system and tells you the most expensive bullshit of what you need.. Just take the info off of that and you'll know.

or you could go to dell.com put in your service tag # and it gives you all the specs of your comp, and allows you to re download any drivers that were pre isntalled in your system

yeah, goto dell.com and goto support, for desktops (if thats what ur using), and put in ur service tag/express service code and u should be able to find the specs