Many users with wireless laptops find it suitable to connect only the remote PC (laptop) "wirelessly" and continue to use a "wired" connection for the main PC if it is located close to the router. This would mean that all you need to buy is a combined "Wireless ADSL Modem/Router".
Netgear DG834G - click here
Belkin 54G ADSL Modem/Router - click here
Linksys 54G ADSL Modem/Router - click here