not sure, I haven't done enough work with wordpress to know(I have just done a few simple blogs...not all that thrilled with it)...but I would assume it would work...it's just a php include.. but again, my only complaint with them is documentation...I do a ton of flash/php type programming but have very little experience with this stuff(every time I used to set up a top list with a new traffic script...it took me forever)...but I will say the install of this script is extremely easy...
and yet again, I am just giving props to something I think is good(seems like very few people just say "hey check this out because I think it's good" anymore --it always seems to be "hey check this link to something with my ref code")...you can find out more at there site
www.scriptpulse.com