Back last december I bought a "Netgear Cable/DSL Wirless Router MR814v2".
It can 'hard' connect 4 computers plus the WiFi function
Have had no problems and even if you don't use Wifi yet it might be worth getting it now.
The main point is I paid $50 for it then in the US (probably even cheaper now), price in UK is still closer to £100. Buy in the US if you can!