Windows XP Profession 64-bit edition

Do you do the latest client for the 64-bit Windows XP Pro please.... as
we have just had a PC delivered and Novell Client for Windows 4.91 SP1
will not run correctly....

When I reboot after install - I get no novell login, after logging in to
Windows I then click on Start - programs - novell common - novell login
and click on Tree I get the following error message:

Error: A required network service has not started. Please check your
error log for details.

I have had a look at the error log but nothing stands out!!
Please Help...... thanks, Kim