annoying toolbar

i have the most irritating toolbar which has attached itself to internet explorer. i did the ususal drill of running spysweeper which had picked it up before, but this time it diddnt i updated my software and still no result. so then it was a case of removing the toolbar from view and putting the google one there instead. although now it wont even let me do that, when i right click on the toolbar and try to 'uncheck' it it wont let me. it appears in very light grey text along with the google toolbar so its totally unacessable. usually im not picky about this sort of thing but its annoying cos it is also sending me pop-ups every 20 mins or so and seems to be hijacking internet explorer, any ideas on what to do about it. it also calls itself the 'poke' toolbar if it helps anyone.