WPA PASS PHRASE COMPATIBILTY

I ahve a wifi G Network comprised of a DLink DI-525 Router, A DLink DL-122
USB adapter and a recently added Netgear WGPS Wirelss Print server with 4
port switch, All works sell with WEP Encryption using the same HEX key. When
trying to migrate to WAP the two DLINK devices communicate well but at a
much lower speed than under WEP but the Netgear is unable to join the
network. The passphrase was alpha-numeric and withing the min-max pass
phrase limit, Ay assistance would be greatly appreciated, Mark