Best way to bring vector files into flash

I have some simple line work from illustrator that I would like to include in a website. Saving the file for web from illustrator gives terrible quality even if settings are set to maximum. Saving from illustrator as pdf and rasterizing the file with acrobat or photoshop is changing the colors drastically.
If you search the web for images related to “geometry” you get a lot of clean line drawings that are in various formats (jpg, png, gif). What is the best method for getting an illustrator file ready for use in a webpage?

thank you.