With whatever version you found you can't. Please wait for the official release of Plus!Live, that one will import those settings for you (only if you don't have an older "illegal/leaked" build of Plus!Live installed).
May i add that by downloading from wherever you got it you put your computer at risk, since it is not known wether these files are trustworthy..they could have easily been tampered with. Infact there are already fake ones about that delete your contactlist.
Always download from the official site, or it's mirrors (mentioned on the official site)!
Official site from wich to obtain Plus!Live once it's released is
http://www.msgpluslive.net
For news about Plus!Live progress see:
About Messenger Plus! for Windows Live Messenger (MSN 8)
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