You have a mount with RA _and_ DEC control? Luxury!
I image with an EQ3, using an EOS40D and 200mm F4 lense - Only the brightest objects are visible through the finder. Many will appear after a 30 second exposure though.
Its a bit of a pain, but for imaging faint objects, i use
http://www.astrometry.net/ - it will at least tell you which way to adjust the mount. Its more useful for wide field imaging though i guess. It also means you need internet access, etc etc.
Its how i managed to get pointed at sculptor:
http://182.160.128.150/Astro/Sculptor.jpg
What sort of exposure times do you manage before PE start to become an issue? Im managing 60 second exposures, with maybe 6 out of 10 being usable