Your Trek 460 is an excellent chromoly steel framed bike that will last you for decades, if kept dry. Just make certain that any surface rust is removed immediately. If the surface rust is minimal and exists only in a few spots, just cover small sanded area (about the diameter of a quarter or nickel) with fingernail polish. If the size of the sanded area is more than a couple of inches (especially in several places), tape off the area, prime it, and then paint it with rustoleum. If the rust is speckled throughout the tubing, or is becoming a prominent surface feature, just thoroughly sand the entire bike, yourself. Then have it professionally powdercoated! Make certain that it's rustproofed before reassembling your bike, after powdercoating.

If your bike has no rust at all, just ignore this advice all together!

Good Luck!

- Slim