[Problem]
You would like to use webmin with your Devil-Linux to make configuration more easy.
[Solution]
If you use a USB Stick to save your config, this should not be a problem (besides that you should not use floppies anyway, as they are not very reliable..). Just install webmin, for example, to /etc/apps/webmin
The config size will increase by about 9 Megabytes, which really is not that much. A 64MB USB Stick still is way sufficient for this.