HUGE PROBLEMS WITH MODEMS ON WINDOWS XP

Hey
I Have Been having a lot of problems at my work
with fax modems v.92 56k

I Have Tryed

Lucent
Motorolla
Web Excel
Netcomm

And All And They Either

Dont Connect Or Dont Install

Anyone Know Of REALLY GOOD MODEMS
For Windows XP

Please Let Me Know ASAP

As Im In A Working Invironment
I Need To Provide Customers & Myself
With Realiable Good Without Problems And Complaints Thankyou

Kind Regard

JuST!c3 Technology