Router Problem and CS

[bixus]

Here is my problem. I have two comps hooked up together with a BEFW11S4 Linksys Wireless Router. One comp is running 98 and the other is running XP.

I own two copies of Half-life and hence have two cd keys. I can play online at the same time but I can't join the same server. I am thinking that maybe we have the same IP and CS doesn't like this.

I was wondering if there was some kind of setting I could fix in the router itself? Any help will be appreciated.

Thanks.