I've used 2302 print film from Kodak that I got from an APUG member, developped in paper developer. Contact exposure in darkroom using the enlarger light is sufficient. I wrote an article about it here:
What you need to know about slide printing is that the final contrast needs to be pretty high (gamma around 1.5) to have a good looking slide. Film that is developed for printing on paper has a low contrast (gamma around 0.6 say).
To create a slide with 1.5 gamma out of a 0.6 gamma negative, you need a positive that can be developped to about gamma=2.5, and that's a lot of contrast. Normal in-camera emulsions (tri-x, plus-x, hp5, delta 100, etc) cannot give enough contrast to be used as print films, plus they don't have a transparent base.
A print film like 2302 or 5302 has a transparent base, and can be developped to a gamma of 2.5 by using a high-energy developer like D-97 (formula available on Kodak website). Stock Dektol could be in the good ballpark as well. The other neat thing is that print film are blue-sensitive only, so that you can either develop them by inspection under safelight, or use them in-camera as an old-fashioned negative. See my gallery for a photo made with 2302: http://www.apug.org/gallery/showphot...29&ppuser=6132