Look through your Visa cards for one that says Visa Signature on it (recent examples are the Chase Sapphire card, Chase British Airways card, and Capital One Venture card).
Click hereto enter your Visa Signature number, as well as your Hilton Honors user name/password. If you don’t have a Hilton Honors account, you can sign up for one at the link.
That’s it. You have instant Gold status with Hilton through August 31. That’s good for instant room upgrades and free breakfasts on Hilton stays. If you complete 3 stays before September, you extend your Gold status for another 2 years.