Making MS SQL backups is quite easy using the build-in features.
But it is more efficient using the Compressed Backup Tool which you can download here http://mssqlcompressed.sourceforge.net/doc_command.shtml
The syntax us as follows :
msbp.exe backup "db(database=YourDB)" "zip64(level=3;filename=YourDB)" "local (path=D:\Temp\YourDB.zip)"
The benefits are highly compressed backups compared to the native MS SQL backups.
Just give it a try