Mark,
I have some experience with dope. I have built 3 Guillows kits in recent years. I built them for display, did not fly them.
I used Aero Gloss dope. Also used the stuff some as a kid building control line models for .049 gas engines.
Looking at a bottle, the main label just says Midwest Aero Gloss, but to the right of it the text says "The original hot fuel proof dope system...". They make 3 types of finishing products I believe, dope being one of them. I think you might still find bottles that say Pactra on them. I think Midwest bought the products from Pactra, or there is some relationship between the two of some kind.
Your kit probably came with a little instruction book about how to finish the frame with the tissue and dope it. I found that helpful.
Use in a well ventallated area! This stuff is very volatile. For my last project I even bought a charcol filtered respirator. It really helped. Those paper mask type things will not be good enough.
I don't know that there is any help in using the products there, but here is Midwest Products web site: http://www.midwestproducts.com/
Here is the last Guillow kit I did. It is their kit # 405
http://www.safeplace.net/darienk/p40_02.jpg
Oh, and just for fun too if you don't know, here is the Guillow web site: http://www.guillow.com/
Feel free to ask me any questions. Not to say I am an expert, but might be able to help.