small windows odd problem

hello all, I have just installed php-4.4.0 on my windows xp system and added the directory to the path c:/php-4.4.0-Win32 but I am having problems with the cli version of php. I can get into the program but after i type a bit of code, I try the following keys to get output but it never parses it. I have tried ctrl-z and ctrl-m and ctrl-d but none of these will execute a darn thing. The bit of code I tried is as follows <? echo "hello world"; ?> but like i said, nothing is output when i hit ctrl-m, ctrl-z, or ctrl-d on linux i am using php 4.3.10 and the command line works perfectly