Hi blh9901
I'm not sure how I stand with posting offsite links.
I don't think I would be breaking any rules but, as I'm new here myself, if you would like to 'PM' me I can link you to a really good tutorial for the effect you're looking to achieve.
It's designed for Photoshop (which I like using) but I used to use Fireworks too and you would be able to achieve the same bubble effects by using these techniques.
It's very quick, simple, and helpful and there's a number of other tricks you can pick up at the same time. The site's nothing to do with me but I use it all the time for pointers.

SITE ADMIN; If this is not allowed, apologies in advance and please correct me.