[sprintgirl]

Ok....so let me try and answer this in one fail swoop.

A odex theme has a separate component to each apk whereas a deodex theme has the information included in the dex file built into the apk so that the info is all in one location.

2.1 folder structure is the same but some of the file names are changed. and you have to use 2.2 apk's for a 2.2 theme.

the easiest way to convert is to open each apk from the 2.1 theme and the new set of 2.2 apk's and copy in the "modified" file from the 2.1 version into the 2.2 apk then you just pack it all back up. just be sure that the file name matches. the only one that comes to mind specifically is the phone default icon. (also the file size changed on this one so you need to use a photo editing software to resize the image and place it on the new size canvas/file name.)

converting them gets confusing because it is a lot of folders of the same name opened right next to each other on your screen but if I can do it on a 10" netbook I'm sure you can handle it.

Best of luck hope that wasn't too confusing but if you are making themes all of that should make sense to you.