I bought a couple 2 gig cards for the office PC. Is there anything special I need to do to install it other than turning the machine off, pulling the other card out and sticking the new ones in?

Figured I'd ask before doing this, seeing how good I am at screwing up computers..... My PC is an HP Pavilion a1767c running Vista. It has 2 gigs, but it's a bit slow when running Lightroom.