I've noticed that the nearside (left side when sitting in the car,
gearbox side so shorter driveshaft) CV gaiter/boot has got a small nick
in it.  It's pretty small, and isn't on  a 'crease' part of it but in
the middle of a flat face.  The surrounding inch or two had a little
grease (I assume) on it.  Pressing gently around the area causes a
little more great to come out - suggesting (maybe wrongly) that there's
still some in there and it's still pretty full.

I actually noticed the CV boot had some grease on it around Sept 06
(with MOT done at council place at end of Oct 06) but for whatever
reason, hadn't been able to get a good look until now.

Is there any kind of repair that can be done on it considering the
damage is not on a crack, but a low flexed flat face.  It looks like
external damage rather than normal wear and tear (which I'd expect to
happen on a crease point).

If not, what kind of cost should I expect for replacing that boot at a
local garage?

Alternatively, how difficult a job is it?  I know my Dad used to do it
on his Mini, but I've not really done many jobs like this but more than
willing to try!

Thanks

David