Serial Port Communication

Question

hi every1

I have application which is in asp.net version 1.1.
I want to do seria port communication in asp.net.
 I have two options:one is system.io.port which is used in version 2 and second one is Microsoft common control dll which is used in desktop application.
Is there any other solution.How to do?
If u have any solution,pls reply me.
it's urgent.I am in deadline.

Thanx
monika