Dreamweaver Adjusting Frames Help?

Just wondered if anyone could help me out...
Am building a website with frames and can build everything fine, but once I save and exit, I open up Dreamweaver again it doesn't allow me to adjust the frames. Have tried everything. Is there some sort of lock option I don't know about as the frames won't budge. Are adjusting the frames something you only get one shot at, as this problem only occurs after the web pages have been saved and the program exited. Any help would be much appreciated.