Has anyone tried
Zamzar? It's free online file conversion.
From Gizmo's newsletter:
Subscriber...writes, "Gizmo I found this file conversion site and it's a winner. You should take a look." Well I did...and it is very good. It handles five image formats, 14 document formats, 11 video and nine audio. Just point to a file on your PC, select the output format and the file is uploaded to the Zamar server. Then you get an email with a link to the converted document. It's free but do read the terms of service. There's nothing threatening in it but you should be aware of such things before uploading any of your files to a third party site.
http://www.zamzar.com/