PHP Files Configuration

[Uzair]

I just installed WAMP server & want to work in PHP.
I made a php file but when I open it from LOCALHOST it simply shows nothing but a whol blank page & when I open it from its location, it opens in Dreamweaver. Please tell me what kinda problem I'm facing ????

[neel]

I Dont Know About WAMP Server But I Use XAMP Server It Works Well.
But WAMP Also Works Well As Far I Know Cause Many Of My Friends Are Using WAMP.

Did You Opened That File by Double Clicking On It ? Or When You are Opening That File With IE Its asking You To Downloading That File ??

[Uzair]

If I write the PHP code like...
<?PHP echo "Hello"; ?>
Then the page shows HELLO
but if I write
<? echo "Hello"; ?>
Page remains blank.
Is is necessary ro write <?PHP rather than <? ????????????
I've PHP ver. 5.2.0/Apache 2.0.59 & MySQL 5