If Giu have a dongle with storage capabilities, do this first:
Insert modem into pc and wait for driver to install
check in device manager which com port is assignated to your modem
download putty
here the.earth.li/~sgtatham/putty/latest/x86/putty.exe
close every program related to modem
run putty
click serial below port number and then change port number to one previously founded
click open
write atz and press enter, modem should answer ok
write ati and press enter, modem should give name, type, etc
write AT^U2DIAG=0 and press enter, zero cd is now disabled
Just insert the dongle and wait 2 min max and the signal bar should show up
If you have a dongle that works, tell me and i'll add it to the list
Huawei E220 (Tested be me)
Huawei E180 (post and another)
Huawei E1752 (post)
Huawei E169 (post)
Huawei E1550 (post)
Huawei E173 (post)
Huawei E1750 (post)
Huawei K3765 (post)
Huawei E160 (confirmed via PM by darktyroll)