Invoking a DOS program from Delphi v3

Hi...
  I asked this question before and Zitt gave an answer which didn't work. I'm re-asking it:
  In v1 I used the following routine which worked well when invoking a DOS app. In my app I must wait for the DOS app to complete before proceeding...this method worked well:

Function WinExecAndWait(Path : string; Visibility : word) : word;
var
  InstanceID : THandle;
  PathLen : integer;
begin
  { inplace conversion of a String to a PChar }
  PathLen := Length(Path);
  Move(Path[1],Path[0],Pathlen);
  Path[PathLen] := #00;
  { Try to run the application }
  InstanceID := WinExec(@Path,Visibility);

  if InstanceID < 32 then { a value less than 32 indicates an Exec error }
     WinExecAndWait := InstanceID
  else begin
    Repeat
      Application.ProcessMessages;
    until Application.Terminated or (GetModuleUsage(InstanceID) = 0);
    WinExecAndWait := 32;
  end;
end;


..now that I am in v3, I see the "GetModuleUsage" command is not present. All I want to do is invoke a DOS app and wait for it to complete. The v3 help files are so horrible and cryptic that I can't understand a word they're talking about! Read a little about some "CreateProcess" command but couldn't make heads or tails of it! Any suggestions?

  Also, on another note, my app in v1 used a TabbedNotebook with 10 tabs - with the TabsPerRow property set to 5 so there were 2 rows of 5 tabs each...nice and neat. I notice in v3 that the TabsPerRow property doesn't work...it strings out all 10 tabs in one row...one after another...really ugly. Is there any way to solve this without me having to resort to the new PageControl component of v3...I have a LOT of controls on my old TabbedNoteBook and it would be hell to try and move them all over to a PageControl component.

Hope you can help!

Cheers!
  Shawn Halfpenny
  drumme59@sprint.ca