Map network drive problems with Vista

Hello,

I am new to Vista and we are trying to get a few brand
new Vista Business machines up on our network for test
purposes. But I can not get the machines to
successfully map to out Netserver drive that is being
served from a v5r1 box. I'm hoping it something simple
in Vista I am missing, but after a day of searching
and reading through many Vista networking issue
solutions, and anything I can find on IBM's site
nothing has helped yet.

Here's some details on what I've done so far:

There are 2000 prof and a 98 box on this network that
have always and continue to access the Netshare
without issue.

I am administrator to the Vista boxes.

I installed a new copy of iSeries Access v5r4 on the
boxes. I can open a session with the As400 with no
issues. I can open this session via both server name
and IP address, and I can ping from the command prompt
with success with both name and IP, so it appears DNS
is working just fine.

File sharing and Discovery is turned on on Vista
machine.

Network/Internet is working fine on the boxes.

When I watch the Netstat on the AS/400 I can see a
netbios connection opened from the PC to the AS400,
and it closes a few seconds later.

I have tried the "use a different username option" and
that does not help either.

The error I get from Vista is "The mapped network
drive could not be created because the following error
has occurred:  An unexpected Network error occur ed"
 

Any thoughts on what is hopefully something simple I
have missed on these new machines?

Thanks in advance.


 
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