u want the last free version of JV16 powertools itll find any remnanats of ANY program left in your registry
on the web I dont know where it is anymore and probably wouldn’t trust the download even IF i could still find it but i have a clean copy at my website here:
http://www.freewebs.com/coilscollection/
its under the windows xp /downloads section if you have Vista just use glarysofts glary utilities which is also at my site thought not as powerful…anyways if you have XP install Jv16 power tools and then after the agree page click on Registry Tool and then at the top center on Tools then on registry FINDER…
in the white box that opens type each of these on a separate line…
Zonealarm
Zone alarm
Zone Labs
then click continue and start or w/e it will find 99% of the ZA crap left over…BEFORE you go to Select/all read the entries it found…they will give you any other names that other remants may be called…just write them down for the time being…there shouldn’t be any others than wht Iv’e listed but I use the free version…the paid ZA may have others…anyways when they all “selected” click remove in the lower right corner…poof your done!
IF it showed in the entries it DID find…other names like maybe ZAupdate or some such just re-run registry finder again but with those names in the white box.
This is a very powerful tool so take it slowly…it keeps backups so IF you get over zealous in you registry cleaning you can easily restore…even in safe mode.
This program also does a lot of other things…like easy access to the programs that “start” when your comp starts etc…it can uninstall any program it can clean up leftovers on your add/remove programs lists etc
Glary utilities does even more but it doesnt have a registry FINDER and its registry cleaner is not as powerful as JV16’s is…just go slow and you won’t have any problems…
IF you haven’t ever run a registry cleaner on your comp before…don’t be alarmed by how many problems it finds…and DO be amazed at how much faster your comp runs with a clean registry.
The first time you run a registry cleaner…I’d use the one in glary utilities…because JV16 power tools has some hidden built in function that stalls the program if the registry cleaner finds TOO many things to remove…I assume its a safety feature…Ive used these programs for years and assure you they are completely safe and just as completely powerful…everyone loves Glary utilities because its so user freindly…it also has a file wiper for those ahem…files that you don’t want your wife or husband etc to EVER find …the wiper is so thorough that even progras such as undelete can’t recover the files.
Anyways take a look at my site and use the cleaners that are under the heading that is your OS…aka windows XP or windows Vista. theres also a million other great links and programs i’ve collected over the years…all are safe sites and most are already known to many people…like Virustotal…Spybot search and destroy etc…
don’t worry JV16 or glary or even CCleaner will clean ZA right out of your system 
It also helps to uninstall it first and delete and shortcuts, startmenu icons and zonealarm folders in windows explorer first too.