[CentOS] wireless question

I've had no luck with getting a wireless card to work. Before I go buy another card, I wanted to see if there is a way I could do this instead. I've got a second wireless router that I'm not using right now. So I would like to find out if there is a way I can make this work. I was thinking about connecting the second wireless router to my pc through the ethernet port, and let the router be my wireless connection instead of a wireless card. Now, is there a way I can get the second router to talk wirelessly to the router that's connected to my broadband modem, and surf the web and everything else that way? Any help would be appreciated. Jim