Pdf Printing

I have a Dell Dimension 8400 with Vista Home Premium 32-bit Service Pack
1, 3 GB of RAM and an HP Laserjet 1020 printer.

When I try to print a pdf file the printer disappears from the Print
Folder ( I think the service stops running). To enable printing again I
have to go to:
C:\Windows\System32\spool\PRINTERS and delete 2 files: .spl and .shd
(one of which appears to be a shockwave flash object); then reboot. The
printers will reappear and everything is fine until I try to print a pdf
again!

I have tried both IE 7 and Firefox 3; the adobe pdf reader and the
foxit reader. Same thing keeps occuring.


--
aking1001