Neil,
One word of caution, at least based on what I have seen here with ZipControl:
1) using the latest unzip (6.00) produces an incorrect output (date & time stamp) within the ZipControl window
2) using unzip (5.52) gives the correct results
See attachments showing those results for both.
BTW: on my machine I am also seeing a weird situation when attempting to open multiple ZipControl windows at the same time, the 1st one is good, the 2nd window never shows up but the ZipControl process is started in the background...I have never been able to tell what's blocking the 2nd window from actually showing up though