How to acess /usr directory in hosting account (extension library)

I need to upload some files to this directory (extension library)

/usr/local/lib/php/extensions/no-debug-non-zts-20060613

But I cannot find this directory anywhere

How to acess it and upload the files?

Plzz... Help

Thks in advance

^ If you really need to upload files to that directory then why not create that directory, if it doesn't exist.

It exist, I think in every account

but maybe it's hidden or something