Can anybody help me here?

I need a sim for a beginner. I currently have JR 7 channel Tx, so need software only, but also any interface detail. My computer has USB, microphone, headset, memory stick, monitor and printer jacks. I need to know what to buy, where to buy it, etc. I guess what I'm saying is that I'm after 'plug & play' software with not much/nothing to do in the way of adaption.

If there is a thread dealing with this already, please point me, and I'll go there and save some space here.

Thanks for your help.