Ended up spending some time getting this to get this to work last week. We had some Windows services running on a Windows Server (Server 2003) that needed to access data on a NetWare volume. While a logged in user could access the data on the NetWare server, the windows service could not (or was intermittent at best).
Here’s what I found – hope someone finds it helpful.
Per Microsoft – Windows services should use UNC paths not Mapped Drives
http://support.microsoft.com/kb/180362/EN-US/
Novell’s direction on getting MS Service applications to access NetWare volumes if the service was written in a non-novell-aware manner.
http://www.novell.com/support/viewContent.do?externalId=7000312
After following the latter directions everything is working great.
Time to get back to some RIA development 
Margarida
March 13, 2009 at 8:58 am
Hi Joshua,
I would like to THANK you VERY MUCH for this post, it was the solution for my latest life problem.
I’m portuguese and work on Bank of Portugal and we have an Apache Tomcat web Server running on a Windows XP workstation. When Tomcat was running as a Windows Service I had the problem of not beeing able to access files on Novell Network. After installing the Novell patch the problem doesn’t exist anymore.
Thanks once more and have a nice weekend!
Margarida