i'm trying to find a hosting which provides PHP acceleration (XCache, APC, PHP Accelerator,...) but i can't find anything about it in the hosting providers webs not even in Google (php+accelerator+hosting) !!.
Is not php accelerator important?!?
Do you know any hosting with any PHP accelerator included?
It's not something most of their customers know about, so they don't write about it. Most shared hosts probably have one installed because it lets them fit more users on each server. Send an e-mail to each of the hosts you're considering and ask them what they use.