I've looked at Yahoo Finance and found stock charts but not Commodities...I need spot charts for energy, metals, grains and livestock that I can embed in my site.
Any suggestions?

Answer
you can see it if you sign up for one of the companies (fxdd,wwm,forex) but from the experience i can tell you that the feed is proprietary and no one will let you publish it to your site without a large fee.

i want to setup an data vending service for stock forex and comodities for that i?

need an downloader so that i can offer that downloader to my clients which then can download the quotos from my server can u suggest me anyone who can make an custom downloader for me

Answer
Have you paid for a data feed from each of the exchanges? Have you paid for a license to redistribute this data? If not, then nobody can help you.