Here is the beta version of a front end for ppmcentre. Note that this front end only provides a visual interface to ppmcentre - all the real work is done by ppmcentre.
For those who don't know, ppmcentre is a DOS based program, developed by Anthony Wesley (bird), that takes a bitmap image of a planet and centres the image of the planet in the frame. Ppmcentre can do a few other things, too, most notably cropping the image from full size to a more manageable size.
According to bird and Mike (FWIW, I agree), Registax will do a better job on an image where the planet is centred in the image, and, the smaller the size of the file, the quicker Registax will process.
Bird's documentation for ppmcentre can be found here:
http://acquerra.com.au/astro/software/ppmcentre/
I'm looking for volunteers to beta test this front end. PCFE can be downloaded here:
http://www.iceinspace.com.au/uploads/PCFE V1.0.0.zip
Unzip the file in the directory of your choice. Double click on the file called Setup.exe. PCFE will be installed on your computer along with all other files needed (including the latest version of ppmcentre). You can find PCFE under Programs|Planetary Tools on your Start Menu.
When you start PCFE you will see two tabs. The Folders Tab allows you to add folders for processing by ppmcentre. Press the Add Folders... button to open a dialog. Make sure the folder you want to select is open (open folder icon) before you press Add. If you make a mistake you can press the Clear button on the Folders tab. Alternatively, you can drag and drop folders from Windows Explorer (I find this easiest)
Click on the ppmcentre tab to adjust the ppmcentre switches. Holding your mouse over the various components will reveal a tool tip with some helpful advice on the purpose of each parameter (from birds ppmcentre instructions). Adjust these parameters to your hearts content, but be aware that I have placed some restrictions on these parameters that seemed sensible - eg CutX and CutY have to be smaller than Width and Height, the size parameters all have to be even and increments of 4 (as per birds instructions). PCFE will pass through the parameters you select - if you select parameters that don't make sense (eg Threshold = 0) then ppmcentre will report an error and return (unless you have selected the Force Process switch). PCFE starts with some vanilla flavour defaults - when you change one of the parameters, you are given the option to save these values as the new defaults, either when you move off the ppmcentre tab or by clicking on the 'Save ppmcentre options' on the File menu.
When you are ready to process your files, click on the Process button. PCFE will open a DOS window and run ppmcentre on the directories you chose with the parameters you selected.
I strongly suggest you read bird's documentation before using PCFE - probably a good idea to read the documentation while you have PCFE open and the ppmcentre tab selected. There are many more functions in ppmcentre that are not supported by PCFE, so you only need to read about the supported switches.