I blew up an image in photoshop and its become very pixelated, its a one color graphic and I just need to blur the edges a bit. Is there an anti aliasing option?

You can do most anything in Photoshop, but rasterized pictures kan only be enlarged by scaling up on each pixle. Although Photoshop uses some good algorithms for making the scaleup as smooth as possible afterwards, if the original rasterized image is small (enough), and the size of your desired image is big(enough), as it appears in your case, Photoshop just isn't the tool of choice.

I suggest that you use Illustrator, or some other tool that support vector based graphics. In your case, the picture has only one color, so that would be fairly easy task to convert the picture into a vector based graphic. Once you have converted it, you are free to scale the graphic as much as you like without loss in quality. Good luck

exactly. vector graphics are what you need in this case. however there is a workaround in photoshop which will act similar to vector graphics, but that would involve tracing that picture with the pen tool and making paths...and that would probably be long and drawn out and unnecessarily complicated and the final image would only be as good as your tracing skills .