I have just acquired a new computer and have downloaded Thunderbird onto it... can I bring over my folders, etc that were on my old computer (which is dead)?

How dead is it? If you have access to the drive, you can do it. If the pc crashed while thunderbird was running, it might be a salvage operation, piece by piece, but definitely doable to some degree (depending on any damage done to thunderbird). Provide more details and I or others will assist as best we can. Thank you

Hey David. The start button stopped working so I couldn't turn on the old computer. The Geek Squad wasn't able to fix it. They are currently attempting to transfer/copy the hard drive onto an external hard drive for me.

We can still assist. Post back to same thread when you get it back. My earlier suggested steps still apply :)