Is it correct to say "when I get TO there"? (I have always thought that you only can say "when I get there".)
If I were a native speaker of English, I would never shut up. :-)
If you're going to use the word "there", then don't use "to". If the final word is the name of a place, then use "to".
When I get there, I'll phone you.
When I get to London, I'll phone you.
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.