Hello I want to increase the wireless range of a wireless netowrk a mate of mine has setup.
The distance from his AP to the last pc in the network is only about 15 metres but its going through two bedrooms and a bathroom to get there.

Ive seen 5db and 7db antennas on ebay so was thinking of buying two to put one on the pci wireless card and one on the AP.

Does it matter which one I buy, is 7db ok or is that for only certain applications? Is there a trade off somewhere. Will any Ap or wirless card be able to work with the 7db?

Appreciate the advice on this?