Code:

function IsRunning( sName : string ) : boolean;

var

han : THandle;

ProcStruct : PROCESSENTRY32; // from "tlhelp32" in uses clause

sID : string;

begin

Result := false;

// Get a snapshot of the system

han := CreateToolhelp32Snapshot( TH32CS_SNAPALL, 0 );

if han = 0 then

   exit;

// Loop thru the processes until we find it or hit the end

ProcStruct.dwSize := sizeof( PROCESSENTRY32 );

if Process32First( han, ProcStruct ) then

   begin

     repeat

       sID := ExtractFileName( ProcStruct.szExeFile );

       // Check only against the portion of the name supplied, ignoring case

       if uppercase( copy( sId, 1, length( sName ) ) ) = uppercase( sName ) then

         begin

           // Report we found it

           Result := true;

           Break;

         end;

     until not Process32Next( han, ProcStruct );

   end;

// clean-up

CloseHandle( han );

end;