does your computer detect the phone connected? are you connecting using usb cable? does PC suite detect your phone?
if you're using windows XP, here's how to check if the phone is detected by the computer.
-press the Windows Logo Key + R
-in the "Run" box, type in
devmgmt.msc and press enter
-in the device manager box, scroll down to the end. should see "Wireless Communication Devices". when you expand it, there should be a couple of Nokia
N95 USB entries. (Generic, LCIF, OBEX (3 of these), Phone Parent). make sure none of them are disabled
then modify PC Suite connections temporarily
-right click the PC Suite icon in your system tray
-go to Manage Connections
-in the Nokia Connection Manager, uncheck the USB box
run NSS again and check.