binxgook,
(as said) Google Toolbar for IE
or
http://googlebar.mozdev.org/ - for FireFox
You can also check your Google PR online in multiple places - have a look around...
http://www.google.com/search?num=50&...ne&btnG=Search
You can tell if your site has been spidered by looking in your server stats for robot visits and User Agents..
eg: -
1751 0.07% Googlebot/2.1 (+http://www.google.com/bot.html)
22 0.00% TurnitinBot/2.0 http://www.turnitin.com/robot/crawlerinfo.htm
Different Se's have different bots.. here is just some of them..
http://www.jafsoft.com/searchengines/webbots.html
DD