Go D-link--the product is more reliable. I originally purshased a Linksys 4-port wireless router, and it was crap. Flakey connections from day one, and it died permanently after about a month. I bought the Linksys because of the "Cisco" brand name, but after the problems, I did research into the user reviews--about a third of user reviews say Linksys is crap. Not nearly so many have negative reviews of D-link.
I've got a D-link at home, and it runs very nicely with no problems. It's easy to configure, too. I don't run wireless because I've only got one device (as opposed to 500 or so on the network I maintain at work), but when my daughter visits she brings her D-Link wireless router and I just plug it into my D-Link firewall and she's good to go with her laptop.
What D-Link router would you recommend for connecting a desktop and a laptop to our "home network"? And do I need to know what I will be connecting to the network besides those 2 computers? (as you can see I know nothing).