This looks like an easy conversion. The quickest way would be to get a cheap 700c track wheel (do a search on these forums) track cog and lockring, plus you may need a new bb to get your chainline correct. Go look around sheldon brown's website for a full guide to fg conversions.

I actually agree with dutret, I find conversions that are trying to look like trackbikes a bit offputting. But it's your bike.