Possible to redirect Start tab on today screen?

[aksd]

Hello all,

I was wondering is there a registry edit to redirect the start tab from the convertional start drop down menu to say My Menu from SPB mobile shell?

I know the start menu has been replaced with the HTC cab as well as with quick menu but I cant find out how it has been done.

I apologise if this has been covered before but I could'nt find anything in the search.

Thank you in advance,

Akshay