Solaris 7 & 9, Iplannet 4.1 and Sun One Web Server 6.1

Hey all,

I was wondering whether anyone could give me any tips. I'm a total newcomer when it comes to Solaris and i need to dothe following:

Current System:

Solaris 7 running IPlannet 4.1:

Upgrade (Preserving current data) to:

Solaris 9 running Sun ONE Web Server 6.1

Has anyone done anything like this before? Can you forsee any real problems with upgrading the systems? I'm a complete novice on solaris but i've done a little bit of research and it seems like it could be a fairly straight forward process - so long as i work out how to log into the system!! The main worry is upgrading the system and breaking it - then i'm in REAL trouble!!!!!!

I'd appreciate any info regarding past experiences, do's and do nots, or maybe some good resource links on the web???

Thanks for your time guys and gals!

Andy