Page 1 of Philips 750 - how do I remove multiregion hack & VCD problems

I want to remove the multi region hack from my Philips dvd - does anyone know how to do this ?

I want to do it, to see if it has affected playback of VCD`s - I have some now that freeze and refuse to play - has anyone had this probelm too ?

Any answers to the two questions would be appreciated.

Cheers