I bought a Linksys Wireless G PCMCIA adapter for my old Toshiba laptop. Mahina ang pickup ng signal nung Linksys. Hina ng signal if I try to connect sa 2nd floor bedroom (access point ko nasa living room).

I suggest you bring your notebook to test out the signal strength when you want to buy a wireless adapter card. You can choose between Linksys, DLink, Aztech, Belkin, or Netgear. Try to find one with an antenna, I think it will be able to pickup wireless signals much better.