How can I stop Insight deleting downloaded files?

Whenever I download slideshow files (.exe) from the www.mediafire.com website (which www.picturestoexe.com/forums uses to download these files), File Insight (NIS 2011) deletes and quarantines them.  How can I get Insight to give me the option of whether to delete/quarantine them or not?  It is very inconvenient having to go to quarantine every time to restore them.

 

Thanks,

 

Geoff