Most Helpful Girl
Changing for a somebody else - BIG NO NO. I'm sure you have beautiful hair. And if YOU like it (please don't be offended) but everybody else can get screwed. I have heaps of friends with limp,straight hair that would kill to have your curls :)
You can get your hair chemically straightened, it's not permanent as your hair will grow out curly (just like regrowth with colouring) but it lasts for quite a while and won't go frizzy when you wash it. Be careful though, as thesse chemicals will still damage you hair.
If you decide to do this I really hope its for all the right reasons and that it's for you - not anybody else.