'First of all, thanks a lot to all of you! 'It really helps! 'Sorry for late answering but I found some functions which may help: Extern "Win32" 'Sorry only usable on win32 Function WinExec ( Cmd:Byte Ptr , Show ) Function ShellExecuteA ( Wnd , Cmd:Byte Ptr , File:Byte Ptr , Params:Byte Ptr , Dir:Byte Ptr , Show ) Function CreateProcessA ( App:Byte Ptr , Cmd:Byte Ptr , PrAt , ThAt , InHandels , Flags , Env:Byte Ptr , Dir:Byte Ptr , S , P ) EndExtern 'The last of them is very intressting but not easy not understand ( as I think ). 'ShellExecuteA(...) seems to be equal to ExecFile(Path$) in BB.