Damn, I haven't got that... Are EB considering to make 0.81 available for download again? Or are there any mirrors that still host 0.81? I really want to finish my old campaign before upgrading to EB1.0, if it's possible.

Also, a clarification to the post above: no, I don't need both versions installed at the same time! First, I would like to finish my 0.81 campaign that I backed up during a computer crash. Then, once that campaign is finished, I will not need 0.81 any more, and transfer completely to EB1.0. If possible, without reinstalling RTW/BI when doing the transfer.