What's a good website to find insect orders/identifications (science project:P)

I’m sure there’s a website specifically for doing this, but failing that, you could always use Wikipedia. Here’s the entry for the common house fly, for example:

http://en.wikipedia.org/wiki/Housefly

You can see the scientific classification in the right-hand sidebar.

It may not be comprehensive, and remember that anyone can edit Wikipedia so you should try to cross check it elsewhere if it’s important.

I use this one for reference when I do a painting with insects.Hope it helps you:)
http://godofinsects.com/museum/aerial.php

Another good one is www.bugguide.net or, just for fun, www.whatsthatbug.com.

thanks! that did help a lot!!