Interesting you mentioned this, because I believe the 4WS from the earlier Prelude's indeed can be adapted to fit earlier generation Accords. While I'm not sure about the 4th gen. Accord, it's worth looking into.

One of my friends who's a technician is into Honda (races vintage CRX's and has an older Si undergoing a B18B transplant as we speak). He helped one of his friends convert his 3rd gen. Accord into 4WS (I believe it was a 3rd gen).

That's about all the information I can give you, sorry I couldn't be of more help. But definately look into it, it'd be pretty cool.