How can I Change value in Sheet Excel ?

[regis]

I use the "Microsoft Excel Chart" and I would like to change value on sheet1 in chart1 for build a new graph but I don't know what is the good method.

Ex: I have column A B C D and I wont to change value in Column B.

And who can said to me where can I find all methode I can use wiht VB vs Excel

Thanks a lot and sorry for my english.
Redg