MSI Package Builder

Hello,

I'm using the package builder that is on the Windows server 2000 CD to

create MSI packages for programs that do not have them. I have created an

image of a computer that just has the Operating System. I actually have 2

one for XP and one for Vista. My question is this:

Each time I create a package do I need to start over (i.e. with just the OS)

to do further packages or can I just move forward from that point (i.e.

create the first package, then the second, etc without using a clean system?

Any help would be greatly appreciated.

Thanks,

Rich