If by "regular keg" you mean the ones typically used for commercial beers in 15.5 gallon kegs, sometimes smaller, they use a Sanke style connector. The Sanke connector won't work with homebrew soda "corny" kegs. You need pin lock or ball lock quick disconnects.
The easiest way is to get MFL tailpieces for your sanke tap, then terminate your gas and beer lines with female flare connectors. You'll be able to attach your beer out and gas in lines to Sanke or ball lock or pin lock quick disconnects.
I agree with other posters - you need to come up with a more specific thread title next time. And here is why it matters. You want someone to answer you, don't you? Can you imagine how confusing it would be if everyone titled every thread the way you did?