Thanks.
you saved me.
it is great software. i used GIMP as well but that was too heavy for my P4 system with 1GB RAM but it is very fast as compared to GIMP. and i think it has more plugins than GIMP.I liked GIMP also but because of my system i was not able to use it to max performance. many time i had to shutdown the system because GIMP caused it to hang.
thanks for help.