For installation Piotr Trzcionkowski's programs from Internet was prepared ActiveX control. It means that you must have Microsoft Interner Explorer 4.0 for installation. By using this AX control you can update program and avoid unneeded, multiple downloadings of program components which were installed before. Because my control isn't digitally signed on installation time you must reduce security. You can simply do Tools|Internet Options|Security and set security to Low. Other solution is set my site confidence in that tab. You could know that first installation will download relativelly big libraries (even several megabytes). After that all my programs will be download with a very low costs (even only 20 kilobytes).