I can add on here this little piece that may also assist:
http://www.carp.com/carp-forum/viewtopic.php?t=37603.
Its a link to various Lead set-ups with some pics.
Also go to the search facility at the top of the page, and type in Running leads vs Semi-fixed as your search criteria, and there is another thread in Advanced Carp Fishing section that may offer some more help
thank you very much i had a good look at the set up pic and thats sorted the confusion part out thanks again theses site are so helpfull im so glad i joined them now