Here's an excerpt from Wikepedia:
Myriad is a humanist sans-serif typeface designed by Robert Slimbach and Carol Twombly for Adobe Systems. The typeface is best-known for its usage by Apple Inc., replacing Apple Garamond as Apple's corporate font since 2002. Myriad is easily distinguished from other sans-serif fonts due to its special "y" descender (tail) and slanting "e" cut. Myriad is similar to Frutiger.
I believe it is a font supplied with the Adobe Creative Suite, I'm assuming you must not have that? Do you need something type set? If you send it to me I can do it for you.