PHP Settings Help

[ridebmx]

I am wondering how I can go about getting a PHP settings change.....

I have this error on an install;
PHP setting suhosin.post.max_vars >= 400: error No

I have been told that I require;
Ask your web hosting support to increase their suhosin.post.max_vars and suhosin.request.max_vars to 500 or higher

Is this possible to have done?
The domain is www.cheekymonkey.org.nz

Thanks in advance!