^^ See *graphicssoft.about.com/od/aboutgraphics/a/fontoverload.htm where they discuss problems in Win 9x machines caused by having too many fonts. This apparently is not so severe in Win2k and WinXP systems...
@sm_ashiq, you should consider cleaning up your main partition (C: usually) as clutter in this drive will affect performance. Second, you should move data files away from this partition and into a separate partition... Third, if the entire Harddisk is running out of space, you should consider purchasing additional software... Finally, in the link I have provided in the beginning of the post, there is info on managing fonts - software available etc. Use it to remove unnecessary fonts and then add only fonts that you need...
Arun