Thanks Guys,
As already been said, It will take getting used to. I am not over keen on the version 4 range, but I will have to get used to it because the version 3 range will become obsolete.
As Canoeboy has rightly stated, it will become a security risk to remain on version 3. We were on the very last version 3.8.6 PL2. That is, as far as the software manufacturers have made out, the last one they're doing in that version.
The colours on the buttons can be changed. (read and unread) back to the original blue and orange, if you all want. But I do have important things to do, before any fine tweeks like them.
I have had over 1,200 error e-mails with regrard to the old "Groan (3.8) and the "Thanks". I have been forced to delete the old "Groan", but an still getting errors about it, so there is a problem there, that I have to try to sort out.
The Thanks, has been disabled and not deleted - but again, I am still receiving the error messages. (They are driving me mad, but I hope to sort them).
So bare with me and give me feedback.