Welcome to the TDI-Club !!
I hope someone chimes in soon with a reliable mechanic in your area! If no-one does, take a look through the "trusted mechanics" list:
http://forums.tdiclub.com/showthread.php?t=130044 or the Vag-Com list (linked at the top of the page) and see if anyone shows up...
If not, then... I can't say that too many folks around here are very enthusiastic about going to VW dealers - especially for minor things like glow plugs... I assume that you've seen the little (?) Glow Plugs 101 thread:
http://forums.tdiclub.com/showthread.php?p=749854
I don't know how mechanically inclined you may be, but I would encourage you to think about either learning to take care of silly little things like this yourself, or else find a friend/neighbor/relative/co-worker who feels at home wrenching on cars and use the resources of this great website to educate him (or her - we have a couple of mechanic "chicks" around here...)
All the best,
Yuri.
PS: a code such as this is quite easy and inexpensive to fix... unfortunately we've heard of dealerships wanting to replace all 4 glow plugs plus the harness for anywhere from $500 to $900 !!! The plugs can be found for under $70 (for 4), are easy to replace (anyone who's replaced a spark plug can do it), and the harness usually just needs to be cleaned witha contact cleaner... especially on a 2003...