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.
You can use the SP xp_cmdshell to map the networkdrive for sql server, after that it will show up in the file browsing window.
EXEC xp_cmdshell 'NET USE Z: SERVERLOCATION PASSWORD /USER:DOMAIN\USERNAME'
more info here: DB Restore from Network Drive
Worked for me!