Service User ,Exchange Profiles

<b>A)</b>

1.is PISUPER in PI7 is SERVICE user ?

2.can we change any Dialog User to Service user?What it will show its effect on the system..

<b>B)</b>In Exchange profiles ...

1) What is the Default Client ?Is it 001

2)Can we change Client to other client for example 020....

With Regards,

Satya Kuamr.