PicBlock is a good, free software only available for Windows, that belongs to the category Security software with subcategory Blockers & Access Control (more specifically Internet).
It's available for users with the operating system Windows 98 SE and former versions, and you can download it in English. The current version of the program is 4.2.3 and its last update on 6/14/2011.
Since we added this program to our catalog in 2011, it has already achieved 94.731 installations, and last week it achieved 40 downloads.
About the download, PicBlock is a slick program that requires less space than the average program in the section Security software. It's a program frequently downloaded in India, United States, and Australia.