Wow, this is a blast from the past: Dreamweaver 8 on an XP machine.
Having said that (after recovering), you will need to supply more informmation like, have you had it working before, and can you show us the crash report?
PS: Can't resist
Did you install the 8.02 update? If I remember back that far, it contained some critical updates that improved stability.
But quite honestly, Dreamweaver 8 is ancient. If you're building modern websites, you really need a modern code editor. At least, one that understands HTML5 and CSS. I would suggest Brackets but I don't think it will run on XP. You need at least Windows 7 with service pack 1.
As Nancy says if you are using the server behaviors you'll need to make sure you have the 8.0.2 update installed, as the 8.0 release generated server side code that had a nasty SQL Injection vulnerability. Also you'll really need to install the HTML5/CSS3 extension to bring it a bit more up to date. Its very old though and the server behaviors only support old versions of PHP and the old MySQL extension, I don't recommend you use for new projects. ...