High Tech: Using my worm tumbler/castings sifter made of 5 gal. buckets, PVC pipe and 1/4" hardware cloth. A two person operation sifts 20 gallons in 10 minutes.
Low Tech: Put the vermicompost in a milk-crate and set it on your future worm bin, open to the sun and wind, for a week. 95% of the worms leave, and you the add the rest to the garden!
Both worked well for me recently. Happy Wormin'
Pete

Pete: Any chance you could post a couple photos of your worm tumbler?

High Tech: Posting pictures and useful links to where I got ideas.

Low Tech: Me. I wish I were high tech!

Here is how I made it.

Cut the bottoms out of 2- 5gal buckets. Drill 3/16" holes around the cutoff end, 2' apart and 2" from the cut, around the perimeters. Wrap 1/4" hardware cloth between them and attach with many plastic ties. Drill 1/4" holes in the buckets where the handle goes, and secure 12" all-thread with 4 nuts each. Attach a 1" PVC axle-housing with plastic ties to the all-thread. Insert over a broom handle axle mounted on a homemade modified miter-saw stand (or something else) at the proper angle( maybe10-15 degrees).
Now get your buddy and offer a beer. Have em slowly turn about 12 RPM while you shovel the goods in. I rigged a hopper to help load and reduce spillage, but... It is messy. Finished castings, some very juvenile worms, and many cocoons fall thru the screen. Worms and unfinished material comes out the other end. Then drink the beer. I hope this helps and I did not confuse to much.
Pete (low-tech with a rotary-dial phone)