Act! 10 is Act! 2008 and BCM 2007, even with latest SP only supports direct
import of up to Act! 2007.
BCM 2010 beta claims that it will import versions of Act! up to v2009, but
in our testing, we found limited success. Don't know if it is simply a beta
issue or signs of a larger issue.
If you only want to get Contact fields, you could try exporting the Act!
contact data to a CSV file and then importing that way. You will lose your
calendar, notes, history, etc.
Keep in mind that BCM is not nearly as robust and simple to use as Act!, but
if you have very basic needs, it might fit the bill.
M Scott Schaffernoth
www.winnovative.com
Twitter: @insideSMBCRM