Does Linux(Red Hat) support the 3com Model 3CCFE575BT card?
Please help ... Thanks a lot.

may I suggest having a look at Google (http://www.google.com/) ?

Entering "3CCFE575BT linux" will show many pages about people succeeding in getting this card to work.

by the way, you're going to run your web hosting company from a laptop ? ;)

Yes it does.
http://hardware.redhat.com/hcl/?pagename=details&hid=1237

If it's not a default in your kernel config, then you'll have to recompile.