What are you going to record? Audio, like vocals, guitar, or play a midi keyboard? If you want to record a guitar, just plug in your guitar into your computer, (line/mic in) and hit the red Record Audio button and go. It puts it on a track for you, melody or soloist, I think. If you need many tracks, go into Real Band, highlight a track, right click on the track to choose what kind of track, i.e. midi/audio, and hit the record button.
Hope this helps a bit, if you need better information, post more details of your needs, and your system, and someone will answer soon.

Have a good Easter,
Gene