Strange2010 which server files did you got? If you didn't fix the problem yet just do the following steps:
1. Open your mssql and login to your database
2. Open the AUTH Database
3. Open the (I guess it was dbo.Accounts) Table (Right click and Edit Top 200 Rows)
4. there should be a entry with the ID 1 - Username Admin and Password with many different numbers and letters.
Just Copy and Paste this into the Password-Line and the PW will be "admin"
21232f297a57a5a743894a0e4a801fc3
you can also get every PW you want by just getting the MD5 Hash (Thats a crypted version of the word, f.e. see above.. admin got crypted to many different numbers and letters) at this site: