I thought that these two would be active but one of them is not active. Below I have mentioned. gfx.font_rendering.cleartype_params.force_gdi_classic_for_families value Arial,Courier New,Segoe UI,Tahoma,Trebuchet MS,Verdana and gfx.font_rendering.cleartype_params.rendering_mode value -1. I can either set all fonts to be rendered with GDI Classic or no fonts. I am not able to select my specific fonts that I want to select. I donít understand why this in not in the firefox 6. I have used aurora web browser and let me tell you that it worked well and caused me no problems. I donít know what is wrong with the firefox. They should not do this. I am really annoyed by this. Any suggestions regarding this would be highly appreciated.