(BTW: thank you for your help )
In my connection option of the Desktop Manager it only shows USB or NONE in "connection type". Even with the USB selected, after the /NOJVM procedure, only the COM 3 come as a connection option. I have downlaoded the latest version of the Desktop Manager it's V4.5.
If i right click on the BB icon in the lower menu ( next to the time ) and i choose PROPRETIES/CONNECTION DEVICE it shows me COM 3 and that's the only choice i have.
Should i uninstall that version and get the older version?