Sometimes the
৺Adobe Photoshop CS3 reports the
৺Internal Error 2739 and setup dies.
This can be fixed this way:
go to your console and navigate to the folder
৺ ...\Windows\System32
64 bit Users take this one:
৺ ...\Windows\SysWOW64
It is necessary to run the console with administrator privilegs.
There, enter the following commands:
৺ regsvr32 jscript.dll
and
৺ regsvr32 vbscript.dll
This should fix the bug, and
৺installation shouldn't abort next time.