PortableApps.com had Stellarium already. But I found Stellarium(classic version) in its website (https://github.com/Stellarium/stellarium/releases stellarium-0.18.3.1-classic-win32.exe). This version for Windows XP(32bit). I Installed it and it really works on Windows XP SP3.
Maybe PortableApps.com could add this version to portable. Thanks a lot.