I am having a problem opening my Yahoo E-mails that pertain to job offers,for example: career builders; when attempting to open the job details, I get an error message that says cannot open the internet explorer and please click run to continue. I click run.. the box appears for run... I click that... and nothing happens... this issue just began today.. Can you help?

Sounds fishy.. have you tried opening that email through a different browser?
This sounds like a browser hijack