Question for php

i’ve go through with the kirupa e-mail & php tutorial but there are some problem that i don’t understand.

1.how do i make sure that my website host support php…my host is geocities.
2.i understand that if i want to check wether my email with php is really running i have to have php installed into my pc. is that it?

please help me…i’m very new to this one. i really don’t even know if my question is right or wrong. :asleep: