Can i use google search field on my site

[Newbe]

hey

i have a question, may i use this code for google search on my site:

<form action="http://www.google.si/search" name=f><table cellpadding=0
cellspacing=0><tr valign=top><td width=25%>&nbsp;</td><td align=center
nowrap><input name=hl type=hidden value=sl><input type=hidden name=ie
value="ISO-8859-2"><input maxlength=2048 name=q size=55 title="Iskanje
Google" value=""><br><input name=btnG type=submit value="Google
search"><input name=btnI type=submit value="Luck Search">

?

I would post Powered by Google or something under it.

Thank you for your replies.

Cheers