MicrostockGroup

You didn't mention the platform. For what it's worth, If by chance you happen to use Mac, then Graphic Converter does what you want. It doesn't have a PC version.

I think you are asking an interesting but old question, not being critical, but when you read and follow, it's much worse than just some free software.  Seems to be a universal problem.

http://www.sphoto.com/techinfo/rawconverters/pages/exifiptc.htm

The Irfanview forum has messages going back years 2008 maybe earlier. I found one site that had this link above and the question was posted in 2004! People say the RIOT plugin will handle it, until the author joined in and said, no it doesn't.

Have fun and what you will find is you can copy the EXIF data to another file and replace it. I have Breeze Browser and didn't even know I could use it for this. Basically I just gave up and figured I'd lose the data between file types most of the time. You may find a better answer, but I've tried and never found a good answer in four years of looking for myself.

Thanks for the tip here's the link fro anyone who wants it. Right from Nikon

http://www.nikon.com/news/2010/0817_viewnx2_03.htm