i have some tables and need someone to take a look at what i have to find mistakes

[versuviusx]

ok so i'm trying to make a database for a computer repair buisness
i have a bunch of tables but i'm not sure about my relationships.
basically i want to make a database that captures information about customers
and allows me to make specific queries so i can find trends.
i'd also like to possibly find other software or database templates that do computer repair buisness customer management. please let me know if i can send my diagrams.
maybe i can upload to image shack.

 

[Guus2005]

When you have normalised the database up to the 3rd or Boyce-Codd Normal Form, you can't go wrong!

If you dont know what that is, please google it.