Quote :
start>all programs>accessories>system tools>backup>wizards comes
switched to advance mode>automated system recovery wizard>next>select media files is greyed

Try using the "Browse" button and select the backup to restore

a word of advice, in my experience, DO NOT PUT YOUR FAITH IN WINDOWS BACKUP UTILITY, it can't keep your data intact. If you have a large amount of data, you should consider to use ArcServ, i belive is one of the best software to backup your data.