Hi All

So, I've spent the last few hours trying to fathom out what some experts are on about regarding these topics and I'm completely confused!

I've ordered the update cd's but now I'm not so sure it's a good idea to do it with all the possible problems it can cause.
Some experts are saying that it's easy and that items that disappear during the update process can be restored through the hidden green menu.

Can anyone please produce an idiots guide - (and I mean step by step), to the process and what is the solution to restoring the functions that disappear?
Where is this hidden green menu?

Thanks in advance