New Minefield paf.exe, please?

Hi!

Is it possible to make a new paf.exe for the latest Minefield?

FirefoxPortableNightly_4.0_Beta_12_Pre_English_online.paf.exe doesn't work since the more recent Minefield is like firefox-4.0b13pre.en-US.win32.zip.

In other words, 13 not 12.

Or can one just fiddle with the installer.ini of the "12" paf.exe and change 12 to 13 using a text editor? Or will more changes (beyond my competence) be needed?

Will this be sufficient?
[DirectoriesToPreserve]
PreserveDirectory1=App\Firefox\plugins
PreserveDirectory2=App\Firefox\searchplugins
PreserveDirectory3=App\Firefox\components

[DownloadFiles]
DownloadURL=http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-trunk/fire...
DownloadName=Current Minefield Trunk Build
DownloadFilename=firefox-4.0b[strong]13[/strong]pre.en-US.win32.zip
AdditionalInstallSize=[strong]26000[/strong]
AdvancedExtract1To=App
AdvancedExtract1Filter=*

I'm wondering also about this "AdditionalInstallSize=26000".

Any advice will be most appreciated!