I wish to tell you one thing the PR will increase only after an PR update
PR update has not yet happened ,All are expecting a PR update now.
You do n't need 100 PR3 links to increase your PR,just a single link from PR3 can increase your PR provided that site has a single backlink to your site.
I can give you 100 PR3 links by submitting to some quality directories also I can give you link on my directory network.(More than 10 Directories)