Here you have some links, where you can request and vote for 4 Minutes.

http://www.mtv.com/ontv/dyn/trl/voting.jhtml
http://www.vh1.com/shows/series/top_20_countdown/vote.jhtml
http://www.z100.com/pages/info/request.html
http://vipnetwork.kiisfm.com/jojoontheradio/blog/cat/jojos_top_99
http://www.mediabase.com/mmrweb/7/stationplaylistrequest.asp?c_let=KIIS-FM