problem starting up the game for the fist time

i just downloaded wrath of the litch king, the game downloads a patch and then asks me to browse my files for the game because it cant be found. when i find the file it tells me to reinstall it at a different location... any idea what im supposed to do?

You shouldn't download any patches if you got the 3.3.5 client.
If it patched, you have to re-download.