Question about PHP Configuration

[Ersenal]

Hello everyone,

Note: I solved the problem,thank you.

I have a question about PHP configuration.
I want to use VIDISCRIPT(kind of youtube template).But i dont know how to change these settings,default max upload size is 2M.

safe_mode = off
max_execution_time = 1000
max_input_time = 1000
open_basedir = (no value)
upload_max_filesize = 200M
post_max_size = 200M
register_argc_argv = On

i tried php.ini but didn't work. Should i use SSH?

One more question: How can i access /usr directory?

Thank you.