I find many forget this or that. For example on the Dell we have to install Quickset to turn on the wifi even though the wifi drivers were installed.
Since you left out the make and model, replies are going to be generic or asking for the missing details (sorry but I didn't find this in your post.)
My hard drive died and I replaced it with a new one. I installed windows XP pro and the other programs that came with the laptop. I used to have wireless connectivity on the laptop before but I can not find it now (only options for lan or modem). Can anyone tell me what I am missing or doing wrong please!