Thanks for your answers but I still don't really get it,

When I try putting __asm { int 3 }; at the beggining of DriverEntry and I start the driver, I get a page fault even through I did put I3HERE ON in the softice initalisation. (I tryed doing bpint3 to before loading the driver but to no avail)
When I get the page fault, I don't get any readable code (not even asm) in the code windows of softice, is it normal ?
So have you guys any idea on what I could do to be able to trace my driver with the softice displaying my source code of it ?

JMI, what I dind't understand of ATTACH and ADDR was that you had to have the process allready running when you use them under softice which is not the case since I want to trace the driver at the beggining.

As for using the Symbol Loader, it works perfectly when trying to debug an application but you can't tell it to stop at the entrypoint for a driver.

Well anyway thanks again for having all been quick to answer and please if you have any idea about what I'm doing wrong.

Regards