WinExecAndWait32

[Aztaroth]

Tengo esta funcion en delphi 7

function WinExecAndWait32(FileName:String; Visibility:integer):integer;
var
zAppName:array[0..512] of char;
zCurDir:array[0..255] of char;
WorkDir:String;
StartupInfo:TStartupInfo;
ProcessInfo:TProcessInformation;
Resultado,exitCode: DWord;
begin
StrPCopy(zAppName,FileName);
GetDir(0,WorkDir);
StrPCopy(zCurDir,WorkDir);
FillChar(StartupInfo,Sizeof(StartupInfo),#0);
StartupInfo.cb := Sizeof(StartupInfo);

StartupInfo.dwFlags := STARTF_USESHOWWINDOW;
StartupInfo.wShowWindow := Visibility;
CreateProcess(nil,
zAppName, { pointer to command line string }
nil, { pointer to process security attributes}
nil, { pointer to thread security attributes}
false, { handle inheritance flag }
CREATE_NEW_CONSOLE or { creation flags }
NORMAL_PRIORITY_CLASS,
nil, { pointer to new environment block }
nil, { pointer to current directory name }
StartupInfo, { pointer to STARTUPINFO }
ProcessInfo);

{Espera a que termine la ejecucion}
{Wait until execution finish}
repeat
exitCode := WaitForSingleObject( ProcessInfo.hProcess,1000);
Application.ProcessMessages;
until (exitCode <> WAIT_TIMEOUT);
GetExitCodeProcess(ProcessInfo.hProcess,Resultado);
//MessageBeep(0);
CloseHandle(ProcessInfo.hProcess );
Result:=Resultado;
end;

la vi en TMania y la implemente en mi programa, el problema es que corre bien en Windows XP pero no quiere funcionar en W98 o W2K, alguna sugerencia para este problema.

Gracias.