How do I share desktop with Lion user?

Question

So prior to installing Mountain Lion, I provided tech support to my mom by sharing her desktop via iChat. Now though, I can't figure out how to share her desktop. I'm using Mountain Lion, she still has Lion. So she doesn't have Messages and I don't have iChat. I can't even send her a text message, because Messages says she's not registered with iMessage. All the documentation I can find about sharing desktops on Mountain Lion says that you can share desktops with someone else on your same network, but I can't find anything about sharing desktops over the internet like we used to do with iChat. If I can avoid walking her through installing a VNC client, I would really like that.

Answer 1

Hi Wade,
You seem to be describing an @me.com name that you used for iChat and was a MobileMe and now is an iCloud name.
This "Account" should be active in Mail, Contacts and Calendars for Messages
Uploaded with Skitch!
As far as the AIm Servers are concerned the @mac.com name and the @me.con iCloud Name  are in fact separate AIM Screen Names.
If your Buddies are in the @mac.com Buddy List they will not appear in the @me.com name you have linked it to at Apple.
That is to say If I had an @mac.com and an @Me.com name  AIM would see them as separate Screen Names.
One stage further:-
ralphjohnsr (AIM registered name)
[email protected]
[email protected]
are three separate AIM "Accounts" 
(They are also three separate Buddies if you were adding them to Your Buddy list - although only one of them is real)
You said your mother does not have Messages.
Only Messages can send iMessages  (The Apple iD you have set up for this may or may not be an iCloud ID)
iChat cannot accept iMessages.
If she has iOS 5.x.x on her iPhone (depending on the level of technology you have managed to get her to embrace) then you could send her iMessages that way.
SO...
Your Message > Preferences > Accounts  should list the iMessages "Account" and those iChat ones you had
Uploaded with Skitch!
An iCloud name that is the iMessages Account name may also need to be added as an "AIM" iChat type Account.
If the Jabber ID is only used at work and is not going to be used then you can untick the Messages item next to it in System Preferences > Mail, Contacts and Calendars or Untick the "Enable this Account" in Messages > Preferences > Accounts.
10:06 PM      Tuesday; August 7, 2012
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
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