When I wasn't at all sure what was what about bikes- I found this website and link. It explains a lot about the components of road bikes, levels, what you might want to think about, etc. It helped me know enough to ask better questions ie, what's the cassette like, level of component, etc. I recommend it and hope it helps. I have a Giant TCRw (WSB) - in my searches, I found that I could get more of the compoents and frame that I wanted for less money with Giant. I'm sure others will have other good things to say, too.

http://bikeway.com/page.cfm?PageID=119

Good Luck and let us know how you make out. Liz