Messed up background....?, i don't really get how to work it Options

[RedHedRocker666]

Arryte instead of having the picture at the top of my site like alotta people have I have a jigsaw puzzle at the top but I don't know how to center it. All I did is enter in the code that this puzzle maker site gave me to post the puzzle but I don't know how to center it.

My Webpage


The code I'm using looks like.......

<!-- begin code provided by createblog.com --><br /><!-- start puzzle HTML --><br /><br /><center><OBJECT classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0" WIDTH="480" HEIGHT="640" id="puz378184" ALIGN=""> <PARAM NAME=movie VALUE="http://two.flash-gear.com/npuz/puz.php?c=f&o=1&id=249041&k=44283185&s=60&w=600&h=420"> <PARAM NAME=quality VALUE=high> <PARAM NAME=wmode VALUE=transparent> <PARAM NAME=scale VALUE=noscale> <PARAM NAME=salign VALUE=LT> <PARAM NAME=bgcolor VALUE=#FFFFFF> <EMBED src="http://two.flash-gear.com/npuz/puz.php?c=f&o=1&id=249041&k=44283185&s=60&w=600&h=420" quality=high wmode=transparent scale=noscale salign=LT bgcolor=#FFFFFF WIDTH="750" HEIGHT="570" NAME="puz378184" ALIGN="" TYPE="application/x-shockwave-flash" PLUGINSPAGE="http://www.macromedia.com/go/getflashplayer"></EMBED> </OBJECT><br /><br /><!-- end puzzle HTML --><br /><!-- end code provided by createblog.com -->

I just added it into my header
Help please