Connecting LG KU990i phone t

Try this..
1. open LG PC suite, connect your phone to PC,let the PC suite find your phone..
2. open your device manager and check if there is an exclamation mark beside the devices listed there including your phone.
3. once you find it, right click that device, select update driver,select yes this time only.
4. don't select install the software automatically, select '' install from a list on a specific location'', click next.
5. tick the search for the best driver on these location.
6. untick search from removable or floopy, tick include this location on the search,
7. click browse and point out the windows to the folder where your programs was installed by default, C:\Program files\LG PC Suite\drivers

hope this will help you.