I started with Ravelry and found this thread right away by searching on convert knit to crochet in all forums. The answers were pretty much what I expected, one poster pointed out that the fabric created would be very different. Another suggested some patterns which looked similar to what the original poster was looking for.
|The Original: http://www.ravelry.com/patterns/library/prayer-shawl-in-skyp-stitch|
I did find this website which has some basic directions. When I read through, the person converting is basically redesigning the item using the original item as a pattern template. It does advise looking for a similar fabric type and to know the yarn required will increase. There was also a reference to a book on the topic.
When I clicked over to Amazon, it also suggested two more books on the same topic. Have any of you ever done this?