Do you use the ALPA web boards? If you do, I believe someone listed the solution to this problem a few weeks ago concerning Vista. I'll see if I can find it and post the solution here.

Found it. Hopefully this will help. It is for EPIC specifically, but it may work for Travelnet as well.

"Vista users using IE may find that they are having difficulty accessing EPIC today. If your computer is set to automatically install updates, you will probably find that the security settings for TLS in IE is back on. To correct this problem, open Internet Explorer, Select Tools>Internet Options. Click on the Advanced tab. Scroll down and uncheck "Use TLS 1.0."