VC++ and Win2000

Hello everyone,
I made 2 applications in VC++ 6.0 under Win98. One uses the PC parallel port and the other uses serial port. Both works under Win98. When I ran them on a Win2000 system, the serial port application worked fine. But the parallel port application gives me a "application caused and error...close and restart.." message everytime.
I tried all modes of parallel ports available in BIOS. Anyone knows if I have to change anything in the software? Thanks.

thaque
[490 byte] By [thaque] at [2007-11-18 20:34:26]