If you install the latest version, it should recognize that there's a version installed and upgrade it. As far as Zonealarm requiring you to let Firefox access the internet, that's actually a good thing. I think the version that costs money is preconfigured with certain applications and their signatures so it's easier to use. Forewarned is forearmed: any time a program that access the internet is upgraded, you'll need to give it permission the first time it runs. This is also a good thing. Years ago (probably around 2000) some security expert discovered that all the firewalls except zonealarm could be bypassed by naming a malicious program iexplore.exe. Zonealarm recognized that it wasn't the valid iexplore and blocked it. Now they all have this feature. The key is that you can't just always allow an executable whose name you recognize access the internet. If you didn't install any upgrades, patches, etc, you shouldn't get a message that the program has changed. Note that IE is often upgraded with Windows updates. One other note is that sometimes Zonealarm gets a little aggressive in blocking access. If you share devices on your network, you may need to designate it as a trusted zone. I do a lot of work with various VPNs and sometimes I need to set them up as trusted zones so Zonealarm will treat them as LANs. One other note on Ravencajun's advice that if you don't know for sure, don't allow the access, you may want to leave the "remember this setting" unchecked when you disallow access the first few times, just in case it's something that does need access and you just don't recognize it. There's a way to change these settings after the fact, but IMO it's easier to do them using the popup boxes.

With the latest version upgrade there was a box to uncheck for the paid trial version. Missing that... at the top of Malwarebytes there is a place to click to return to the free version. I wonder if this is happening in your case? At the top of the box for the free version it should say Malwarebytes Anti-Malware(Free) 2.02.1012

@susieq07, Someone needs to put you in your place. And I'm going to do it! What you are doing is down right wrong. You have not been professionally trained in the removal of malware. If you would have jumped in earlier and told her to boot to Safe Mode and run MBAM this is what would have happened. All programs would have been gone and the malware would have won! Some malware does not even run in Safe Mode. Most of the threats now days installs a rootkit. Tell me..how do you remove a rootkit? If your are as good as you think you are then you would know the answer! If you were a professional then you would know that ASC is bad because it includes a Registry cleaner. A professional would never use that program. Oh an susieq07, Security Tool IS NOT A VIRUS!!! IT IS A ROGUE PROGRAM. Weren't you told that before? There is a really big difference between a Virus and a Rogue program! If you don't know the difference you are doing an injustice to the Seniors you think you are helping!!! See below for definitions of several different types of malware. http://in.answers.yahoo.com/question/index?qid=20110404055408AAZVTKy I'm sorry everybody, but I can not stand around and allow someone who thinks they know what malware is all about take advantage of the uneducated, especially when it involves the elderly. They are the most trusting people in the world. Someone has to protect/educate them to be aware of those who think they know what they say they do. Please accept my apologies. Here is a link that might be useful: Remove Security Tool

thunderboltlee- If you are using Firefox -- as I am -- you should just install the add-on AdBlockPlus and then add EasyList to it. It will make the ads go away, and -- though I can't guarantee it -- maybe Malwarebytes will quit responding that way if you block those ads. To add these things, go to the EasyList page (which has a link to AdBlockPlus), get AdBlockPlus installed, and then come back to add the EasyList subscription. All free, all fast to do. Here is a link that might be useful: EasyList