Loading URL with double quotes in it

how do i load data from an URL with double quotes in it? tried using a .php proxy file and also escaping the characters… no go. if i drop the URL in a browser i can pull up the page and get my xml no problemo. can’t seem to load it into my xml object in flash though for some reason! grrr!

here’s the url (i took out sensitive info):

http://api.oscar.aol.com/SOA/key=xxxxxxx/resource-lists/users/*anonymous*/presence/~~/resource-lists/list[name="users"]/entry[@uri="user:xxxxxxx"]