connection string pains and stuff...

I just hate going to bed when I've got a problem I'm trying to work through.  I was up until early this morning trying to figure out what's wrong with my connection string to the Db.  I did some research on the net and found that Sql Express 2005 looks like it can use the old format of...

"Datasource=servername;Initial Catalog=someDatabase;"

and the new format of...

"Server=servername;Database=someDatabase;"

What's strange is that neither way works.  :-\  I keep getting an access denied or database doesn't exist error.  I'll keep working on it tonight...it's probably some little thing that I'm missing or something, because I can make a data connection to it just fine through SharpDevelop, just not through code for some reason.  *shrug*

If anyone could point me to a good location to read up on connection strings for Sql Express 2005 that would rock.  :)