http://www.vailproperty.com is a live feed of MLS data in the Vail market..
Eventually you should involve a real estate professional as there are many nuances involved in purchasing resort real estate.
Ellen@vailreservations.com can assist you with property management information. They do not do sales, but they have 37 years of resort management experiance.
If you want accurate details and listings that are actually current and actually on the market, you need to work with a local broker who knows the mls and inventory in your area of interest.
Otherwise you could end up spinning your wheels for nothing...
And don't forget, as a buyer, you get broker services for Free usually!
Now my contact info is..........
You can also search on this very user-friendly site: http://www.buyvailcoloradohomes.com