The bulleted list asks you to check for the following file names:
WroxUnited.mdf
ASPNet.mdf
WroxUnited_log.mdf
ASPNET_log.ldf
It should ask you to check for:
WroxUnited.mdf
ASPNetdb.mdf
WroxUnited_log.mdf
ASPNETdb_log.ldf
It seems Microsoft have renamed ASPNET.mdf to ASPNETdb.mdf between the betas and the final product (also ASPNET_log.ldf becomes ASPNETdb_log.ldf). Apologies for this one, but without a crystal ball it was non-spottable as the book text was finalised in September and it seems to have changed since then.
Chris
Chris Ullman
Programmer/Technical Author
http://www.cuasp.co.uk