"Eric" <eric@nospam.org> pounded away at his keyboard resulting in:

A must have accessory is a strobe.  Scope out those prices.

For budget underwater photography, take a look at these guys:
http://www.sealife-cameras.com/

Dan Bracuk
If at first you don't succeed, you run the risk of failure.
The Best of rec.scuba http://www.pathcom.com/~bracuk/RecScuba/

   Now that I think about it, I am not sure that it was the Ikelite
housing.  It might be
the Olympus housing.  They didn't have one in stock (perhaps later this
week), so I couldn't
take a look at the thing - all they had was a picture which I didn't look at
that closely.
I started poking on the web, and am finding a combo with the Olympus housing
for
about 458$ +shipping.  Once I sell my lesser camera on eBay, my cost comes
down
even further.

-Eric

See if you can try out the unit in the pool/dive if he rents out the
packages before you commit.
Or atleast try it out in the store for some test pics that you can evaluate.

I did it the hard way - had my digi cam and then went searching for a
housing. I was lucky enough to get one - but most people recommended
sourcing out the housing that would accomodate the camera due to
availability and features that you want - sort of a catch-22.

I'd highly recommend a wired TTL strobe if the camera can accept it - or
atleast get a slaved unit. The on camera strobe is pretty useless for light
coverage - plus a major cause of light scatter. You want the light source
away from the lense as much as possible or you'll end up shots that looked
liked they were taken in an underwater snowstorm.

Also, I don't know the features of that particular camera but you do want
some overide settings - manual, shutter and aperture priority is a big plus.
Exposure compensation for the camera as well as flash output. The TTL is
great for getting used to the unit but you do want to tweak it to your
preferences and dive conditions.

One more thing - check if the seals are easily servicable and replaced. I've
got the Ikelite for my Nikon5700 with DS125 Strobe - been very happy with it
in use for the past year or so.

Hope this helps. Cheers.