CompuServe Messages

I am trying to write sequential TGA's to my Personal Animation Recorder without any success. I get a message saying that this drive (the PAR) is a read-only drive (which is not true) or I get a message stating that Anim. Studio cannot write a temp file to the PAR (of course it can't). I can write these targa files from all of my other windows graphics programs so is there a way to send the export temp files to a standard drive rather than the destination root? Also why can't I create compressed sequential TGA's? (Since I can't go to the PAR I tried temporarily placing them on a standard drive but, WOW! lots of big files – too slow and cumbersome!!!)