there is a intermediate tutorial on caching movie clips coming out on flashkit in the next couple of days. this might really help you out.

One method of approaching this is to put a jpeg in a movie clip. using the load movie action you will be able to perform the operations you want.


<EMBED src="/cgi-bin/ubb/Members/sigs/00000010.swf" quality=high WIDTH=360 HEIGHT=40 TYPE="application/x-shockwave-flash" PLUGINSPAGE="http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash"> </EMBED>