If you mean your own artwork, then you'd take a picture of it, upload it to your computer (make sure you know where you're saving it), then select Insert > Picture in Word, browse in the location where you saved the photo, click the picture, and insert. If you mean an image from the internet or something, you can just save it to your computer and basically follow the rest of the steps above.
oh ya I used to use clip art all the time and I just loved clip art even though a lot of the art was cheesy, but you could definitely find what you needed or close to it. I just tried using the clip art on the new system and because I have a mac its harder to use. I'm having a hard time figuring out how to resize it put it behind text all that. I wish they would bring it back