1. Partitions - No. The question was is there any advantage to having the apps in a partition other than in with the OS.

2. Tutorials - Yes. Google for them.

3. Seeing what was Installed / Removed - Probably & yes.

Registry? I shall provide the following:
<rant>Before you "adjust" the registry, you ought to consider a backup program such as Norton's Ghost or PowerQuest's Drive Image. The programs make a compressed copy of all data in a partition and allow a 10 minute restoration of a completely trashed system. I won't compute without Ghost.

GoBack is another restoration many like. Demo versions of these programs are available.</rant>

After making a copy of the operating partition, hack away at the registry with full knowledge that Ghost or Drive Image can save your butt. I'm no fan of GoBack so I don't know if it can "repair" the damage done to the registry or not.

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Why isn't colour spelt correctly in HTML code?