Its quite easy really
!st ... put your IE tor ukcatchup tv folder on your computor desktop .
2nd .... Open a normal firefox browser & install the flash plugin .
The portable ie uk catchup tv needs two files
flashplayer.xpi and NPSWF32.dll Do a serch for them & copy them
3rd ....Copy flashplayer.xpi and NPSWF32.dll to the Firefox Portable directory FirefoxPortable\App\Firefox\plugins
save onto you flasdrive and then you can use your updated portable firefox on your flash drive