Using green/blue screens to edit

[Morepheous]

OK, here is the problem that I am having. I am using Adobe Premire 6.0 to edit my videos using its transparentcy feature for blue/green screens. What would be the quickest way to add yourself to a movie already made(like Braveheart) so that you can be behind somthing rather than always being in the front. Example.... If an actor is walking through a crowd of people and you want to follow him/her though the crowd so that it looks like your walking though the group as well ...... Any help would be gratefull.

[HellRaiZeR]

try making only the area you wish to be in trasnparent using a transparency tool such as the one included in Adobe Photoshop.. After editing your frames, spray paint yourself in there... Its gonna be tedious work (frame by frame) but the results can be fun and endless!!
hope this helps at all....
HellZ