Engine Computer Installation- NEED HELP!

I have a 1986 celica gt and I need to first remove the old engine contol box and then add in the new one which I purchased on ebay.

heres the ebay auction for a pic...
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1,1&item=7968336634&sspagename=STRK%3AMEWN%3AIT#ebayphotohosting

I have contacted the seller for a set of instructions but haven't heard back from him yet.

Anyone know where the computer is? How to remove it? How to install it?

Thanks

I think it's behind the cigarette lighter/stereo part of the dash at least that is where I think I saw it in my 91.

Just noticed that in the description of that part it says that it's behind the console.

CELICA 86 Elec Cont Unit (ECU); (behind console), 2SELC eng

yeah im pretty sure u pop off the trim sroud the stereo, take out the ashtray-n-stuff and its down behind there. might take some maneuvering to get it out that hole, dont know, but shouldnt be that tough