How do I stop unwanted adverts? I am using XP pro

A pop up does as described, it pops up whilst viewing a web page. An advert is usually displayed just as a web page is opening.
Use a program like Adblocker to stop that from happening.

Not met this one before - all I can suggest is to contact the mfr.

Google "ad killers" to find software that will remove the ads.

If you are a registered user all you have to do is wait and they will email you when your advert is about to expire.
You cannot renew an advert until that point from my experience.
If you want to relist your advert (before it expires) so it will be on the first page again... you have to delete the one you have listed and start over. And your new advert has to be different or they will not let you post the new one.
At least that is the way it used to be, it has been a while since I have tried that trick myself.

Disable Active X on your browser. Install virus and malware protection software.

You can try posting your job ad to the following website:

Montreal Jobs

Anyone looking for a job will be able to view your ad.

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