User rights + Win98

Hi,
I need to set the installation folder rights to read/write for all users so everyone can use the installed application.
I've read that there is a plugin for this purpose, but it runs only under Win2k and WinXP.

Is there a way to solve the problem and make the installator work under Win98 also? How can it be done?

Windows 98 has no file permissions. Everyone can read and write every file on the system.