How we can check PR of a site...

You can install the google toolbar for your browser.

Justin

u kidding ?

http://www.pagerank.net/pagerank-checker/

If you're looking for future PR tools, I find this is a nice tool; http://www.seochat.com/?option=com_seotools&tool=9

try http://www.iwebtool.com/tools

in particular: http://www.iwebtool.com/rank

is it better to have a low or a high number?

i feel stupid even asking but i've been searching threads and google for an answer and all i can find is a bunch of techie essays on how pagerank works/etc... they explain every possible thing you could want to know other than the most basic question

the higher the better!

many thanks!