It sounds like you need to read and use what you learn about ICS from http://www.wown.com
I can't help you because you may have a firewall installed and that is beyond what support I offer. Many can't control their firewall and as such I withdraw any firewall support. Besides Zonelabs deserves that priviledge.
In short, set up ICS and control that firewall.
As to cheap routers, the cheapest was 10 dollar belkin unit on sale. My Wifi-G Dlink router was 25 bucks from compgeeks (plus some shipping) so deals are out there.
i have a 100mbs LAN crossover network on the 192.168.0.0 IP on windows XP Pro but i want to share the internet but no such luck im on BTYahoo Broadband (ADSL) and i want to introduce the PC upstais to WWW both systems a running XP Pro SP2 and both have the same network cards in (cheap