Now I'd like to modify a file of my VBulletin board, and directin say to open phpMyAdmin, which I don't have, so I was thinking of installing it ( http://www.htmlwizard.net/projects/phpMyAdmin/ ), but it offers two choices... one with php extensions and the other with php3 extensions. Any idea which I should pick and why (though I am less concerned with the why part at this moment).

I know: Nothing about php, mySQL, so all of this is greek. I don't even fully know why I need this, but I am hoping that this sheds some light on php and mySQL, and that everything is somewhat self explanatory. The directions to modify the file are step by step so I don't think I can screw this up too bad...

the 2 are exactly the same... but if you have PHP4 installed, get the .php version instead of .php3

Either case, if you support both .php and .php3 extensions on your server, both will work just as fine.

*.php will work only if you have php4 installed.
*.php3 will work on any php installation. So php3 would be the one I would suggest if you dunno abt the version you have installed on your server :)