First you should go to modem properties and see what port your modem is assigned to, Com 1,2,3,4...
Then you should open hyper terminal and then:
Pick any icon, type in any random name, such as "test", hit
Select the option that says "Direct to Com(one modem is on) and hit .
You are now on a open hyper terminal screen.
Now you can send commands to your modem.
ATE1 will turn echo on, used if you cannot see your commands
atz will set your modem to defaults = good thing at thispoint.
at = attention
dt = dial tone
so next command is
atdt (phone number)
a number that you can hear ring is a good test, second lines are good in this case or a cell phone
If the modem is dialing out this way then you can try setting upa connection to dial the same phone number using the modem in Hyper Terminal and see if it still dials out.
This should give you a hardware/driver indication.
Email with the results if you want more assistance.
David