Install the browser plugin....................

Thanx, but the plugin is 33.5MB (after removing Java Web Start); downloaded JRE
1.4, its working fine. Any other alternative, size seems 2 b too big.

And, have another question, my applet  - a small animation (rectange resizing
with few fonts displayed as help) is behaving differently on the client... y so?

Yes, the alternative is to not use applets.

Pl Check browser settings(Properties).
In the case of IE, u will find some checkboxed 4 java support.
Check all checkboxes...For fonts, check browse's font setting...!!
some settings override applet  settings... In this case uncheck it...