You could do it using UBB code in your message board signature like this (substitute []'s for <>'s):
<URL=http://www.mustangworks.com/cgi-bin/MediaDL.cgi?Home_Video+movies+4nomore+asf>See my 1985 T-Bird Burnout Video</URL>
Here's what that would look like:
See my 1985 T-Bird Burnout Video
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Dan McClain, Editor
The Mustang Works Magazine
1991 Mustang GT - NOVI Supercharged 377 Stroker
1999 Ford Lightning SVT - Supercharged 5.4L Triton