Help! Hair is horrible carrot orange!

I dyed my hair at home with a ultra light blonde dye.  I did look on the side of the box which showed actual results based on your natural hair color.  I have dark blonde/light brown hair and fully expected to get a lighter shade of blonde (but not necessarily as light as the front of the box showed!)  Instead, I ended up with incredibly bright carrot orange hair!  Now, I just want to get my hair back to some kind of natural looking color.  Any suggestions?

hjplatinum:  What happened is that the red in your hair came out.  This tends to happen when you try to go blonde.  If you want to go blonde you need a dye with a green or blue base (or "drabber") to counter the orange that wants to come out.  You can't tell what bases are in boxed color so if you really want to do it yourself you will have to learn the color wheel and shop at Sally or another beauty supply shop to buy your dye and developer (the base color is written on those), or call the company that makes the boxed color dyes and ask them what the base color is.  If you don't want to fool with these things, it's better to go to a salon.

(not a pro, but have gone orange with a box color before and went to Sally after that).