Installation/upgrade help Intralink 3.4 to (Windchill??) Wildfire to Creo.

I am currently using Wildfire 4.0 (Build M180) and

Pro/Intralink 3.4 (Build M062), and am under active

maintenance. I'd like to add installations of later

versions such Wildfire 5.0, Creo Elements/Pro 5, and Creo

1.0.

I'd also like to install later versions of Pro/Intralink

(Is it Windchill 10 now?).

Can anyone advise me on where to find comprehensive, step

by step upgrade/installation procedures to make these

upgrades? Any clues to help make the upgrades less of a

nightmare would be appreciated.

Thx.