My name is Alexxis and I typed it in on fb and it said my name was inappropriate but that's how its spelled and nothing was changed!how do i...

Well, Alexxis, the first thing you should know, is that
you are far from alone in your annoyance.  The article below is only a tiny sample of
the numerous complaints with Facebook about this and other management short-comings. 
Likely your name is getting kicked out because of an automatic recognition of the
double-x - encoded with facebook as something potentially vulgar. 
Sorry.

You can email facebook by hitting the "help" link on
the sign in page (bottom right corner), then go to the "contact" link (sort of hidden in
that mess of "common searches" on the far right) and let them know your problem.  Don't
be surprised if one of two things happens:  1) Nobody ever gets back to you, or 2) they
get back to you but won't let you use your real name
anyway.

My advice is fight it if you really care - and wait
out the time it takes to get your real name on there.  But if all you want is to have
your facebook account up and running, just go by your first initial and last name, or
something like that.

Facebook, for all its greatness,
probably has an equal number of flaws as quality points.  Don't get so attached that
your social life would be over without it.