Video sigs in photoshop cs2


In Runtime
I have cerated a sig with a video in it and
I have two Questions how do i add a neat border around where my video is on the sig and also i go onto image shack and i host it and it says it is too big do i have to change the optinos should i check the resize image and choose one on the options form the drop down box do i check the remove size/resolution bar from thumbnail box?
P.S.My Sig size is 2,095kb
Thxs in advance