>When i run the vfp 6.0 from start menu or desktop shortcut i get the message "There is not enough memory to run this application".when i click on the OK button, i get the message "performed illegal operation" and the details tab shows error in Kernel.dll.Sytem resoruces show 80 % as free.I tried reinstall,uninstall and then install with the same results.I reinstalled win 98 also with the same results.Could it be virus or is it due to some other problem

Try clean instalation of Windows 98 (delete entire windows directory and install windows 98 and your apps again). It may be registry problem. Do you install VFP6 SPs? What version of VFP do you use - Arabic one?