Like... what's the go?! If I wanted chocolate on my biccies I'll buy a pack of Tim Tams. By all means make it choc flavoured, put chocolate in it, but don't dip!
And why only half? You either want a choc biscuit coated in choc or you want a plain one... how many people do you know go out and ask for half a chocolate biscuit?
If you really REALLY must dip, then please please PLEASE make it REAL chocolate. That half assed baking chocolate just don't cut it with me!