I want to thank everybody that gave me advice on my oil warning issue.
Changing to a heavier weight oil and a new filter eliminated the problem as
of today.  I hope this is a permanent fix...  I'm planning on buying an oil
pressure gauge this week and checking the oil pressure directly just to be
sure.  It would be nice if I could somehow check it under load...ie going up
the steep hills where I was getting the warning.  Any suggestions?  I'm also
considering putting in some additional gauges on my dash (oil pressure, oil
temperature, voltage).  I'll be converting to a TDI sometime this summer
hopefully...any suggestions on additional gauges for a TDI?

Once again, thanks to everybody who helped out.

Brett