So I exported my final cut from Premiere Pro, and imported it to After Effects. All CS3. When I export from AE, it is taking my 16:9 footage and squeezing it to 4:3. When it plays in AE it is 16:9, but every time I export, it squeezes. Set to NTSC DV Widescreen, h.264 on export. The size it says its exporting is 720x480. I don't get it. Any Help?

it was 720x480, it is 720x480 and when you put it on dvd it will be 720x480, only the aspect is changed to protect the innocent :-)
i Just tried to write about this, see if this helps
http://www.dvinfo.net/forum/non-linear-editing-pc/469875-trying-dodge-squish-virtualdub.html

In AE CS4, I just exported several sizes of a clip today in H.264 from DV Widescreen Square Pixel (872x486) and it said to use "Stretch".

Marty, I read the article. Didn't really help. See, I'm not making dvd's, I am putting it up on the web. When I upload it to youtube, the squeeze is still there. I've spent 2 days exporting and uploading. I'm lost.

Brendan,
Welcome to the world of web player voodoo. Try 720x405 on output if memory serves correctly. For some reason some web video players like the math to be easy and don't interpret pixels like we do in video world.

Got it figured out. At least good enough. Don't really know what I did to get it this way but I am please.

vimeo.com/thebrendansouth to see what I am talking about.