Recording at home? So it doesn't have to be real-time, then?
If that's the case, record the 'guitar' part on your bass, convert that audio to midi using your DAW, and then use a Kontakt library - e.g. one of the Impact Soundworks' excellent Shreddage series - to trigger real guitar samples.
It does seem like a bit of a faff, though, compared to getting hold of an actual guitar and recording that!
EDIT: Shreddage also allows power chords and tremolo picking to be triggered from one note, which may be useful depending on the genre you're after.