For those of you why have acquired the new (as of 9/04) version of Corel Painter (Corel Painter IX), one of the featured additions is a function called Artists' Oils.

Here's a link:
http://www.creativemac.com/articles/viewarticle.jsp?id=28955

For those with the right skills, this sure looks promising.

~Danny~

Another that looks pretty meaty:

http://www.corel.com/painterix/training/tutorial_artists_oils.html?trkid=tpc1204tut

Painting with the Artists' Oils and the Mixer

http://www.corel.com/painterix/training/tutorial_mixer.html?trkid=tpc0905tut