how do you mean cant run it?
you coudnt be here if you didnt know how, so i shall proceede to guess some solutions:
it didnt download right. you'll get some crappy message with the acronym CRC in it. get it again
its a .zip and you cant handle zips.
goto
www.winzip.com and download a demo version.
it didnt finish downloading but didnt get deleted. surprisingly common this, windows is supposed to delete fragment but misses them on occasion. delete and re-get. this is more common with download managers.
its not actually a patch, but something else entirely. if its one of those mods you put it in the override directory. this shoudnt effect connecting to servers.
naturaly tho you'll have encoutnered some dead-uncommon reason and none of this will be any help, in that case send us the error message.
oh, make sure the server is one which has ToB installed (or not if you dont have it). theoreticaly any responsible host type person will mention this in the name. in reality - fat chance. try another server.