Tascam us-122L major problem

[IQfemtio2]

Hi there, please excuse my english in this thread. (I'm Swedish!).

I did just buy a tascam us-122l usb-soundcard & a mic called rode nt2-a from a local musicstore, BUT - i can only get the sound on the left speaker.

When i record in Adobe Audition 1.5, the sound i just recorded is only visible in the left sound-channel.

Today i went back to the store and asked them about what i may have done wrong, but they told me to just switch on/off at the mono-lever.

But it did not work.

Someone had the same problem?
Well, please help me find a solution to this really annoying problem!

Peace / IQ