Okay so basically I'm looking for something like in the title.

I already got a good virtual amp + effects (Guitar Rig) but I'd like to have an access to virtual instruments. I used to do it in Garage band via Guitar MIDI program but I don't know if its possible to do something like that on PC and I'd really like to. Best case scenario if the would be any recording program that could conveniently record both Guitar Rig and those virtual instruments.

I don't look for ultra studio quality, it can be a bit crappy as I'd like to record for my amusement with addition of those MIDI instruments.
Any help is very welcome. Sorry for lack of accurate terms but I have never been too much into building a setup.