I get that but 3 things:
1. I live in a house with 10 other students in 9 different rooms, so there are a lot of walls spread over 3 floors, and I have to have the TC in my room as that is where the connection point is, but also because I'm not stupid enough to leave it lying around the house! Therefore I don't cover the entire house (nearly, but not quite), so the buying of an AE is justified.
2. I've already bought it so it's a bit pointless telling me I don't need it...also it's the 802.11n version, however there are 10 students, and I can't persuade them all to upgrade their windows/mac laptops to n wifi cards...they are all g.
3. You didn't answer my question