2000 honda accord steering wheel vibrating while idling?

[Tom]

i have a 2000 honda accord with just under 130000 miles on it. it is a 5 speed manual with the 2.3L 4 cylinder engine. when i come to a full stop (like at a stop sign or a red light), there is a vibration that you can visibly see in the steering wheel and feel in the seats. The rpm doesn't drop or change, it stays steadily right around 1000 rpm, and the vibration goes away even if i bring the engine up by only a few hundred rpm, and there is no noise that happens with the vibration either. when im moving, it doesnt vibrate either. since i just bought the car, i brought it back to the lot i got it at and the mechanic there briefly checked it out and said that it wasnt something major like a warped flywheel because that makes a clanging noise as well and would shake the car while it was moving. i started doing some research on my own. i talked to a friend of mine that has a wide automotive background and has years of experience with hondas. he says that bad control arm bushings could cause this kinda vibration and that they arent hard to fix, he hasnt had a chance to look at it yet tho; just go off of my description of it. i then did some research on the internet about it, and learned it could be bad motor/transmission mounts. i had my mother sit in the car with the engine running, in first gear, with the clutch pushed in (so the vibrating would start), while i looked at the engine and there was no visible vibration, so i touched the engine itself and there was no feeling of vibration either. i havent been able to look at the transmission mounts due to the fact that that usually requires a lift. im at a loss for what else could be causing it, i have my ideas from the research i did but any input would be appreciated so i can get a list together of specific problems i can have the car lot mechanic look at when i take it back next week to take advantage of my 30 powertrain guarantee.