sierramtns,
welcome to
RP.
from what i've read here on
RP, there seems to be more than one RAW format. i think some companies are using a proprietary RAW and calling it RAW. so, we'd need to know what camera you're using and what program you're using to convert with.
also, check your .jpg settings and make sure you havent got compression turned way up. you'd lose some data in that.
and richard would know much better than i what settings would be best to use if you're using pse3 to do the conversions.
you might also try some other programs to do the conversion. i know there are some out there. maybe irfanview or one of the HP programs. that, if nothing else, could narrow down where the problem is occurring.
craig