What router should I buy

i currently have this router at the moment

http://catalog.belkin.com/IWCatPro [...] _Id=203415

but the problem is im always getting dropped i play games like counterstrike:source, team fortress 2 ,and unreal tournament 3. I cant play sometimes for 3 minutes at a time without getting serious lag or just getting dropped its very very annoying and frustrating. i know that it is the router because i have plugged my computer directly into the modem and have no problems but i cant do that all of the time because my mom, brother, and dad use the internet also. so i was thinking about getting this one,


http://www.newegg.com/Product/Prod [...] 4300%20dgl




I figure it'll help with the games i was also looking at this one

http://www.newegg.com/Product/Prod [...] 4500%20dgl

the problem is that all of the laptops in out home have wireless g cards and the router shown above is wireless n and im not sure it'll work. I myself use a laptop for gaming but i use a Ethernet connection not a wireless.

I know that the lag does not come from the my computer (4 gigs of ddr2, nvidia 9600m gs 1gb graphics card and a 2.26 ghz dual core processor)

also if you have any other suggestions on a router please share

thanks