"USB not recognised", Odin download mode problem

Hey. Im brand new to this forum and to Android aswell since i came from Iphone. Yea im a noob and sorry if you notice bad english
So i received my SGS2 some days ago and after researching about root/custom roms and stuff, I decided to start with rootin my SGS2. i download Odin3 1.85 and superoneclick, i also liked litening rom v1.1 and downloaded that too.
So i turn on "USB debugging" and turn off the phone to enter "download mode" and when i try to connect to Odin, nothing shows up. And Windows bar tells me that usb is not recognised. But... flash drive/transferring files and connecting to Kies works just fine. Please help me, ive been sitting over 24 hours with this issue and ive restarted/uninstalled installed pretty much everything over and over again (kies/drivers/device) not windows though. Why wont Windows/odin recognise it in download mode???

And if possible, is there a way around to install litening rom??

While being in download mode on the phone, the pc/odin is not recognising anything

but everything works fine and recognises when i transfer files or use Kies
/tried uploading screenshots but the forum wudnt allow it since im a noob lol)

JJEgan@
Thanks for reply but ive done that several times now

Thx for the replies everyone. Yea i figured its a driver issue, ill try the suggested actions incl samsung pc studio installing, and if its still not working i guess my last resort is using another pc or reinstalling windows on my own pc

fyi, i reinstalled windows and updated everything and the driver connection issue is solved now. I should have done this from the beginning instead of freaking out for several midnight hours lol thx for the help everyone, hopefully the rooting and flashing process should happen painless now