They're pretty easy to get.

Private-Commercial-College-Multi-CFI-CFII-Severalthousandhours-Charter or Night Freight or Corporate etc-Commuter-Upgrade-Severalthousandmorehours-etc or LongStintInOneOfUncleSamsFlyingClubs-Apply-wait-wait-wait-wait.....

Sorry, but unless you are employed by the airline, I don't think you ought to have one. Hell, it chaps my a$$ when I see Express crews sporting the old round orange tags. Security concerns aside, that's a tag that many have paid dearly for, and its a pretty tight fraternity. They were VERY difficult for us to get. They out to be damn near impossible for you.

Try eBay.