cant access ACP, need to change default style

[kh99]

You should use a supported version of php like Lynne says, but there's another way to stop seeing those errors: find every file that contains

error_reporting(E_ALL & ~E_NOTICE);

and change it to

error_reporting(E_ALL & ~E_NOTICE & ~8192);

If I remember correctly there was also a few other errors that involved removing a '&' from some function calls.