This Is Urgent? Which Serial Ports Can I use to Test my Program

Hi

I m making a software to controlling my home appliance.i m in in initial

i want to which which serial ports i can use to test my program e.g com1 port 2000

can any one suggest or can any one give me link where this information i used.I m using windowsXp platform

mabid48@yahoo.com

[317 byte] By [Chaudhrya] at [2007-10-2 23:36:44]