Loading an external swf

I’ve got two flash sites up and running I need to load one of the movies into the other. The movie I want to load into the containing flash site has php scripts working with a Mysql database.

However, if I load it using loadMovie obviously all the paths and variables are altered and also the two movies share symbols with identical names so it basically get messed up in a big way. Is there a way I can load the movie into a containing clip yet keep it separate in terms of symbols, variables and paths?

I need it to behave as if it was in a separate browser window but I need that window to sit within the flash site so that if the containing clip is resized then this window gets resized as well and remains exactly in the right place. Is there a way to keep everything isolated?