How do you restore a database backup using SQL Server 2005 over the network? I recall doing this before but there was something odd about the way you had to do it.
Create a shared drive on machine that has the backups, say server1 has the backups in folder "Backups". Grant full control to the account running the SQL Server. On the Server that you want to restore to launch SSMS go restore database and select "From Device". In the "Locate Backup file-"Server"" dialog box and remove anything in the "Selected Path" field and in the "File Name" field supply full path so "\server\backups\db.bak". At least it worked for me when migrating from 05 to 08. Not the preferred method because any network hiccup can cause an issue with the restore.