DA... thanks. That works at least for one test. So dose Control +/- on the active text. Strange that "Compose" doesn't affect font size while Display does. Seem either or both could be the needed function - but when composing it is Display that determines the font size. I'll Google for the pain size. Sorry to put you to that extra work/test but when I can't figure out some computer question my first thought is gardenweb/computer... not Google/Web.

Do you know where this 'Program1' is located on your computer? If so close Thunderbird, open Windows Explorer, drill down to the offending folder. right click on it, click rename in the drop down menu and rename it Program. See if that fixes your problem. Any help?

Thanks, I really depend on the excellent help I get here, it is appreciated. That said, I hope someone else using AT&T for an ISP and is happy pitches in. I am keeping for now to retain my email address, one I've used for at least 15+ years. Unfortunately, it appears AT&T is working on getting out of the ISP business (what, just wireless now?). They shut down the brand Worldnet, yet my 2.0 versions of Thunderbird address the "postoffice" and "mailhost" with "worldnet" as part of the address. But, it isn't working on my Thunderbird 3.0 version. I will try to figure something out tonight. My quick look last night at the AT&T help on the web said "pop and smtp with att.jahoo.com" was the magic. But that may be only if you use their DSL... not sure, seems strange. I have DSL form my local phone company, and it offers all the services Worldnet used to offer, I just am reluctant to change may address and lose contact with many I don't communicate with often... but AT&T is pushing me that way. I have all my personal email on Thunderbird, I use Outlook for business email. I suppose I can move the business email on to Thunderbird too (not as versatile as Outlook) but have not checked on how that is done. It appears one can't have two instances of Thunderbird on one computer. Maybe one can have one Thunderbird with multiple "accounts". I know Outlook provides for multiple accounts in one instance of Outlook, but I don't recall ever seeing anything like that in Thunderbird. Outlook is clearly the "industrial strength" email client... maybe Outlook Express has some of the same capabilities... I have never used it.

"Usually" would be the key word here. It seems there was a glitch in the process. Only some of the folders were lost. DH never touched them, nor did he delete any of the messages in them. He only deleted inbox messages that had been uploaded to the phone. I have pasted the reply I received from Yahoo: Thank you for contacting Yahoo! Mail. I understand that you want to recover the lost emails that were accidentally deleted on your POP/IMAP client. I apologize for the inconvenience this issue has caused you. Let me provide you more information regarding your concern. Please read on. According to our records, it appears a POP or IMAP client may have deleted your messages. A POP Client is an application such as Microsoft Outlook or Mozilla Thunderbird, while an IMAP client is a mobile device such as a BlackBerry, or iPhone. Emails deleted by a POP client are now moved to the Trash folder on the server. As long as the emails were deleted recently, you should be able to access your Yahoo! Mail account from a web browser and recover the messages from the Trash. You can configure your POP client to leave messages on the Yahoo! Mail server or to delete them from the server. Check the instructions for configuring POP settings for your mail client by reading this article: http://help.yahoo.com/kb/index?locale=en_SG&y=PROD_MAIL&page=content&id=SLN3255 Once messages have been deleted by a IMAP client, it's removed from your Yahoo! Mail account. Messages deleted by a IMAP mail client aren't recoverable. If your mobile device continues to delete emails from your account, I recommend contacting the vendor of the device or your mobile carrier for further assistance. Thank you again for contacting Yahoo! Mail. I guess I'm screwed and have learned a big lesson. All of my other files back up nightly, and I burn all client communication folders weekly. I never dreamed I would lose what was stored on Yahoo's server. I posted this because it may help someone later.