I am a new network user and would like advice on how to gain the best signal from my router. It is a WRT54G ver7. When I first set it up (with service desk help) I set it up in WEP and when using my laptop upstairs signal was very low but always present. I tried setting up in WPA and WPA2 but sometimes I have no signal at all and now when I set in WEP again I can't seem to connect. Thanks in advance.