Modem Sharing

I’ve a windows 2000 SBS and i’ve a COM modem instaled in there, and i’m sharing it, using the microsoft service modem sharing.

When i try to use the modem from other computer in the network:
I have installed the client service in the computer, i open an Virtual COM with the rigth path but when i try to installed the modem the COM that i’ve created just don’t apeer to me.

I’ve tried the client Service in Win2k, winXP, Win2003.

Some knows some thing about it, apreciate some help.