Hello.
Perfectly possible to make your pc wireless - and easy to do.
You will need a router - Linksys or Belkin are my preferences - and if your pc is not already wi-fi enabled, you can either by a card that fits inside your pc or a dongle that connects to a usb port. The card is the best - and very easy to fit.
You can buy a set - a router with usb dongle - which guarantees compatability.
This for cable (NTL, Telewest) broadband:
http://www.pcworld.co.uk/martprd/store/pcw_pag e.jsp?BV_SessionID=@@@@0680292939.1163432406@@ @@&BV_EngineID=ccciaddjggddhgecflgceggdhhmdgmk .0&page=Product&fm=null&sm=null&tm=null&sku=85 2034&category_oid=
And this for any other type of broadband:
http://www.pcworld.co.uk/martprd/store/pcw_pag e.jsp?BV_SessionID=@@@@0680292939.1163432406@@ @@&BV_EngineID=ccciaddjggddhgecflgceggdhhmdgmk .0&page=Product&fm=null&sm=null&tm=null&sku=11 7029&category_oid=
These are just examples of the sort of thing you need to consider buying.