|A wee how example one can get tricked into downloading stuff you don't want...|
http://adwcleaner.en.uptodown.com/ - is the homepage for the utility itself...
If you look a little down the page and to centre right you will see a reference to Mac OS - with a Download bar above it... That is (sadly) typical attempt to get you to click on that bar and download another "homepage" utility... Carefully placed to imply (I suggest) that it's actually to obtain a Mac version of AdwCleaner - which unfortunately doesn't exist... Even allowing for the smaller type information that it will take you to a download for Geneo... the first instinct is of course to read it as link to/for a Mac version of AdwCleaner...; which of course it isn't.
The correct bar/link for the widows version is at the upper left of the page next to to the "description, comments, screen shots buttons" but you can see how cleverly sites try to fob of "other stuff" for which they presumably get a fee (for promoting 'the stuff")?
Anti-virus rescue disk... Kaspersky comes down as a single ISO - which you burn to a cd (or possibly a dvd if it won't fit on a cd). It'd just under 400Meg in size. That's the file you select and burn.
I suggest you try it with a CD-RW (or DVD+RW or DVD-RW first. That way if you get the process wrong - in a learning curve as it were - you can re-use the disk.. Using a standard DVDR or CDR means you wast a disk if it goes wring in the burn process? You can always reburn (or copy the RW version) later to a R version disk and thus release re-use the RW disk later?
As this Kaspersky support item advises you can burn it to a cd/dvd (or a USB stick - as long as you are able to boot with a USB device too). Whichever you opt for that is what you boot the system with to run the disk/application and scan etc..