On or about October 20. 2006, my email and email records disappeared. (There have been a couple of power failures and something about changing a configuration and getting a new file came up from Yahoo Desktop - if any of that is relevant. I've tried to restore by going into Thunderbird/Profiles/y858532m.default/mail. I've checked Google Desktop and have found some email that I remember. I also tried Yahoo Desktop; one important item that had shown up there subsequently disappeared. MyAVG anti virus indicated some files were infected with 1-Worm/Bagle. I started to re-initialize Thunderbird when the window for starting a new Thunderbird account came up but did not complete this because some of the information I typed in was apparently not correct; now when I try to access Thunderbird I get a message asking whether I want to use it as the default mail application. Since I've been having so much trouble with it I have clicked "no". (I've been getting recent mail via Outlook Express and on my Mac IBook, which I am using now because I can't seem to get to experts exchange on my PC).I thought I had found the email records in C:/Documents%20and%20Settings/Owner/application%20Data/Thunderbird/Profiles/y858532m.default/mail/ but this no longer turns up under "Search". Can anybody help get all this straightened out? What email program is recommended?