OK folks - I finally made it!
After another few hours of reading threads and extreme "try-and-error"-evaluation I got my first own theme running on my E61!
So let me try to summarize:
1. Make the Theme Studio offering to create new themes with the resolution 320x240 (w/h)
Go to the dir "\data\config\phones\" in the Theme Studio Program Dir and open the XML file "BaseGraphics.xml"
Go to the "<layoutgroup>" tag.
There are two entries for each resolution - "portrait" and "landscape".
For some reason I couldn't figure out the Theme Studio doesn't care about the "landscape" layouts - just "portrait" layouts are considered when creating new themes... - ...but there IS already a layout available for the resolution 240x320(w/h) in "landscape" orientation, so everything you have to do is to add a new layout tag for the resolution 320x240(w/h) with orientation "portrait" and point to the previously mentioned "landscape" layout files.
Confused?
Ok, in other words - Just paste the following rows to the <layoutgroup> tag:
<layout height="240" width="320" orientation="portrait" >
<file name = "pql_av_qvga_lsc"/>
<file name = "pql_apps_qvga_lsc"/>
</layout>
If you now start the Theme Creator and select "Theme -> New!" you will be able to choose a resolution of 320x240 (w/h)!
OK.
2. When you finished designing your Theme you certainly want to deploy it to your device...
Choose "CHECKOUT" (Step 10) in the Theme Creator and if everything is allright click "continue".
Now fill in all the information requested for the Theme and select the components you want to deploy.
ATTENTION!!! - The Theme can't be deployed without a Certificate-/Key-Pair!!!
SOLUTION:
On the "Create SIS file"-dialog click the "Advanced"-Button on the lower left side - the "Advanced Settings" will pop up where you can paste the certificate information.
But where to get it...?!
No problem, there is a command-line tool called "makekeys.exe" in the ".\bin\" directory of the Theme Creator. Just open a DOS command-line, go to the dir and type the following command:
For example:
makekeys -cert -dname “CN=MyName OU=MyDepartment OR=MyCompany CO=DE” mykey.key mycert.cer
Replace the parameters "CN", "OU", "OR" by our own information.
You can also change the name of the certificate-/key-file - but not the ending!
Then press enter and follow the messages.
Now we can set the path to the certificate and to the key.
But what about the "Theme UID"???
This is another tricky thing, because there are constraints:
https://www.symbiansigned.com/app/page/uidfaq
With respect to this the only possible values for the Theme UID are
0xA0000000 - 0xAFFFFFFF
I didn't try, but better do NOT choose "DRM Protection"!
Click "OK"
On the "Create SIS file"-dialog select "Preview SIS" to immediately generate the SIS file that can be installed on the device - the click "OK".
Now the files should be generated and a dialog should appear offering the possibility to select a "Transfer"-Button.
By clicking it you get the possibility to choose where to save the theme files.
Before installing the Theme on your device...
...you should do the following (in this case for the E61):
Go to Tools|App Mgr, choose Options|Settings|Software Installation and change to "All" from "Signed Only".
Otherwise the device could refuse to install the Theme!
Now it should be possible to install the Theme without any problems!
I hope I could help you all with my little summary and that it will work as good as it does for me...!
greetz
Howy