Microsoft Journal?

[alexjohnson16]

I have Adobe installed, but whenever I try to open a .pdf file, it brings up this microsoft journal installation thing... I don't have the disc for it or I would just install it, but it opens a program called something like "msiexc.exe" and I have to use task manager to get the installer off... Cancel does nothing as the prompt comes back up, and I have to use task manager to close Firefox also...

Any help on how to get this thing to stop coming up???

Thanks.