Any travel agent can call Vail central reservations, get a listing of condos available for the week you and your gang want to ski, and book you into the one you select. But which condo do you choose? The one with the name reminiscent of the Old West?

It's much more efficient and far more reassuring to call one of the travel agencies specializing in ski travel, and talk with a travel agent who skis, has been there and knows the kinds of things that appeal to skiers. He or she will know whether you can ski in and out of a particular condo, whether it has outside storage for your skis, how far you'll have to hike to grab the local shuttle bus, whether you'll need a rental car, where the best resturants and night life are located, and whether you can stay cheaper during certain weeks in January or March.

Here's a list of the travel agencies whose agents are skiers ready to arrange a trip for your group to the ski area of your choice at the time you choose, or book your group into one of their already packaged trips. -- John Pitcock.

ANY MOUNTAIN TRAVEL SERVICES -- 1012 S. Cleveland Street, Arlington 22204; 979-4300.

GREAT SKI VACATIONS -- 7303 MacArthur Boulevard, Bethesda 20816; 229-9690.

GULLIVER TRAVEL SERVICES -- 7726 Finns Lane, Lanham 20706; 459- 0104.

SKI TRIPS UNLIMITED -- 3549 Devon Drive, Falls Church 22042; 536- 5400.