form what i gather u have to email to the webmaster.. or the person in charge of the videos and then u could link it inside a post in the forums... but the other way to do it is to get some webspace of ur own and upload it to there...thats how I do it
gotta fork over some cash for that =p I pay 11 a month and get 600 megs of space, 15 gb of transfer monthly, php cgi.. all that wonderful coding stuff i like to do