You bike should be perfect for commuting as long as it fits you OK. From what I could tell about the Trek 460 from a quick search is that it looks like a great steel road bike. Should be good.

Any specific pointer/tips you want should be easy to find here on the forms but here is a quick list of things you should know a little about.

-I have no clue were you live, but know you cycling laws.
-Flashing front white and rear red light are a must have especially you your commute times are 5pm and 11pm, lights are the law in all states.
-fenders are nice if it rains ever, many styles to choose from, full cover, or clip on
-Lock up you bike with the right lock. thick cables might seem safe, but can be cute really easily, there is nothing worst then getting your bike stolen, U-locks are the safest, lock the frame, not just the wheel.
-keep your bike maintained, take it to a shop or try to do it your self. its all easy, keep tires up to pressure, clean and oil chain lightly. wipe down the bike when needed.

Those are some basics. This might seem like a lot but its not.

Enjoy your commute