Mozilla and Dreamweaver probs
 

I recently changed my default browser from IE to mozilla and for the most part-no complaints. And I am not sure if this is a Mozilla problem, a Dreamweaver problem or I'm an idiot, but here goes...
"Preview in Browser" doesn't do anything but lock up DW. I have tried 'default browser' and IExplore (IE is enabled) and i have to end up ending the session entirely. When going into the site folders, all index pages are mozilla icon'd, but won't open. They did work about 2-3 weeks ago(altho in bringing the file to school to work with-i had to re-insert the photos as school puters are IE and the mozilla wouldn't browse). I have done my pages as direct replacements and refreshed. I made sure my browser settings were correct and enabled. And now, as of this hour, mozilla won't open at all!!!:mad: I will be doing a system restore as soon as I am done rambling here..but..what are the opinions as to why Dreamweaver is having a tantrum? ( it's been known to have more than one, but I usually win) Final thing-the homepage is an insert on a basic html blank, since i built it in PS-how can i flatten it in DW so that it's not another item in the site map?