Can't Attach SQL Server Express File

Experts,

I'm trying to move an .mdf file out of the standard, cryptic SQL Server Express directory structure into one that I've created myself.  First, I tried it using sp_attach_db as follows:

exec sp_attach_db @dbname = N'TrainOfThought',
@filename1 = N'C:\Documents and Settings\Curt\My Documents\Visual Studio 2008\Projects\TrainOfThought\data\TrainOfThought.mdf',
@filename2 = N'C:\Documents and Settings\Curt\My Documents\Visual Studio 2008\Projects\TrainOfThought\data\TrainOfThought.ldf'


I got an "access denied" error on this operation.  I checked the .mdf, but it has no "read only" flag on it.  So then I tried this:

RESTORE DATABASE [TrainOfThought]
   FROM DISK = 'C:\Documents and Settings\Curt\My Documents\Visual Studio 2008\Projects\TrainOfThought\data\TrainOfThought.mdf'
   WITH MOVE 'TrainOfThought' TO 'C:\Documents and Settings\Curt\My Documents\Visual Studio 2008\Projects\TrainOfThought\data\TrainOfThought.mdf',
   MOVE 'TrainOfThought' TO 'C:\Documents and Settings\Curt\My Documents\Visual Studio 2008\Projects\TrainOfThought\data\TrainOfThought.ldf'
GO

I still got the "access denied" error.  What's my next move?