When is your WP expiring? Expired => If expired, you need to send application for restoration and WP application (2 tick marks), else no need for restoration, just WP extension/application.
Is it the new employer who sent/filed for LMO in your name?
Yes you can do the application online but make sure that you attach all documents called for on the checklist (http://www.cic.gc.ca/english/pdf/kits/forms/IMM5556E.PDF)
Edited:2:52PM 26Oct2011