Do you need to reload it after you delete it, if so and you don't have the disk I wouldn't delete the program files.
To uninstall aloha all you need to do is run the unregister batch file in the aloha d:\ then delete then aloha directory. All files should delete unless you have a ftp folder.Pollcheck program resides in this folder and must be unregistered as well. let me know, I will get you that info as well.
There are no hidden files.