Is it possible to save harddrive space by installing a program for both OS's in a dual-boot PC at the same directory? I've read somewhere that it could be done, but wonder whether it is a good practice. Suppose I install an application on my PC, which is dual boot with Win 98 and WinXP, at the same directory; and when the need to uninstall that application arises in one OS, will the uninstallation take that application out of both OS's? How is that type of installtion affected by a task such as defragmentation or system optimizer?