I've acquired a PR7 domain. Majority of the links go to sub1.domain.com and sub2.domain.com yet the www.domain.com has the high PR. I want to take advantage of the PR and link juice, but I'm not sure how I should handle it. The domain is expired, so I can't check the PR of the subdomains, any tools I use say they can't access the page. Should I just 301 the subdomains to the main domain? Should I put up sub domains as sub pages?