DIGI NEO PCIE 4PORT winxp COM1

Hi ,

I have a pcie 4 port pcie card
winxp sp3

when i install the driver i got COM2 COM3 COM4 COM5
when i rempve to anothe slot i got COM6 COM7 COM8 COM9

i have to configure port as COM1
when i try to force i got : The com port in use by other device
how can i release com1 ??
very urgent issue

1.i have INTEL DH57DD motherboard with update bios
2.i update the card driver

HELPPPPP!!!