Making 2 places have exactly the same files etc?

[raptormonkey]

I have a folder on my PC that i also backup on my external hard drive. Thing is, sometimes when i copy and paste over to the external hard drive there is a difference in what is saved etc!!

Is there a free program i can use to make sure the Folder on my hard drive is backed up on to the External drive 'Exactly'. Thanks

 

[raptormonkey]

Brilliant. Just installed 'Richcopy' and works superbly!! Many thanks indeed.