Can't Change TKIP Pre-shared Key

I have a Belkin set up that has been working fine; however, on
networked desktop the wireless connection is being constantly dropped
I had an IT person who appears to have hard coded the key into th
system in this desktop because it continues to make a connection for
short time and then drop it. On investigation the desktop has resorte
back to an old key. I would contact the IT person; however, IVAN ble
him away and I've not seen him since. Is it possible for the system t
be holding on to the old key somewhere deep in the recesses o
authentication somewhere....???....Looking for someone with knowlege

Thank you

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ckir
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