decompressor

One of the power point presentation which I downloaded today needs QuickTime and a TIFF (uncompressed) decompressor to see the video & the picture. I installed the latest version of QuickTime, but the problem remained the same. Is there any solution to see these pictures & videos ?

i recently compress my 10 mb trailers to 83 kb by using kgb archiver compressor.but how can i play them after compressing,no player can play it.kgb also has decompressor but it soen't works or it didn't know how to do it. gimme a simple method so can i play it on my pc.

Can anybody plz tell me where can i get *.big decompressor