transmission problem

I have a 1995 Prelude Se and about a week ago I was about to back up into my driveway when all of a sudden I couldn't get it to go into reverse. Now earlier that day my reverse gear worked fine because I backed up into my spot at work. Anyways, I decided to just park normal and keep trying to get it into gear, but with no luck. Do I need to get a whole new transmission, or is there a smaller problem here?

have you tried pumping the clutch a couple times?

Yeah, that didn't work either. I've also had some problems with my 3rd gear in the past. Sometimes it won't go into gear, or grind in, and very rarely, just slip out of gear.

maybe your synchros need to be replaced...