Wireless Connection Problems

[Graham Todd]

I'm having some problems with connecting with my HI-GRADE Model 332
laptop and its included Intel/PRO Wireless 2200 wireless card.  Now
this is the problem.

At university, there is a "campus web" and the laptop connects
effortlessly there, without any problems.  At home, the laptop simply
doesn't connect at all.

I thought at first it was my placement, but as I live in a bungalow, it
wasn't the line of sight that stopped the signal connecting.  I took
the laptop closer to my router: the laptop recognised the network but
did not connect.  The icon moved from the circling gear to the
unplugged plug every time.  So I changed over routers, and the same
thing happened.

I've thought about changing the wireless card, but the laptop is only
on loan to me and opening it will void the warrenty, so its not an
option.

Can anybody suggest what's wrong?  I'm using Kubuntu Hardy btw.

-- 
Graham Todd