Thanks for all the help - and I'm getting close. I can now open my site on the new computer but when I try to save it, I'm receiving an error "Couldn\U2019t create file". I have changed the Site Publishing Settings to save to local folder on the new computer but that doesn't seem to be working. I closed iWeb without saving.
Next I tried opening iWeb both from the Applications-iWeb, as well as from Domain.sites2 in Application Support-iWeb. Opening from iWeb, it is asking me to choose a template (start from scratch). From the Domain.sites2, same thing...."Choose a Template".
Finally, I put the flash drive in that I'd used to get the site I was working on from the original computer I was using to create, over to the computer I wish to continue on (both OS Lion). Click to open my site from the flash drive and again, it's asking me to "Choose a Template".
Is this the issue you mention on your help page re: importing to iWeb not being possible? It seems if I'm creating an iWeb file, I should be able to save it, and copy it to and/or open it from any computer with iWeb on it.