How can I find my previous posts?

I fear that the older posts (prior to the SiteWare switch) will never be restored - I would be very happy to be proved wrong

Meanwhile, use Google SITE SEARCH

"Vinnie Me" site:discussions.apple.com - Google Search

https://www.google.com/search?client=firefox-b-1-d&channel=tus&q=%22Vinnie+Me%22+site%3Adiscussions.apple.com

(don't worry about the "firefox" and other parameters in the above link - just click it)

If they were older, they may be part of the ones that have not yet been re-incorporated into the lists of posts when the software was changed here by Apple earlier this year.