IS IT IMPOSSIBLE TO CONVERT...

Did you give it a try?

What does "don't work" mean exactly? Of course, some things won't work because they are not supported in RM2k (for example, the shift and numpad keys).

- Create a new project with RM2k.
- Go to the database and the tileset tab. Click "Array Size" and change the number to the maximum. (If you forget this step, you might get an endless loop of error messages during the next steps!)
- Close RM2k.
- Copy all files with the extensions LMU and LMT from your old project to the new one. Overwrite existing files.
- Copy the content of c:\Program Files\RPG2003\RTP into your new project (otherwise the resources from the RM2k3 RTP won't be found - note: copying is enough, importing is not necessary).
- Download my extension RPG Maker 2009 Ultimate, because one of its features is opening the RPG Maker up to 100 times. (My homepage is currently down, use this Mediafire link instead: http://www.mediafire.com/?fk05601zzzxm67b)
- Open your old (RM2k3) and your new (RM2k) project at the same time using RM2k9U. (Your maps will appear completely black, that's normal at this point.)
- Open the database in both projects.
- Go to the heroes tab in your old project.
- Right-click the first hero entry. Choose "Mass Copy" and enter 99999 (it'll revert to the max. number of heroes you have automatically). Click OK.
- Go to the heroes tab in your new project.
- Click "Array Size" and change it to the same value you had in your old project.
- Right-click the first hero entry. Choose "Paste".
- Click "Apply" - if there is an error at the next copy, you won't lose your work this way.
- Repeat these steps for the other database tabs (skills, items, ...).
- Then, fix the remaining stuff (hero stats - they probably will be lost, system settings, vocabulary, some settings in monster groups) by hand.

You are done.

Best regards,
Cherry

Sorry, I made a mistake. Don't copy the RM2k RTP but the RM2k3 RTP instead!

The step should be like this:
- Copy the content of c:\Program Files\RPG2003\RTP into your new project (otherwise the resources from the RM2k3 RTP won't be found - note: copying is enough, importing is not necessary).