[ecfisa]

Hola ErYcK.

A ver, proba si te sirve de este modo:

void __fastcall TForm1::Button1Click(TObject *Sender)
{
  if (OpenDialog1->Execute()) {
    TStringList *TS = new TStringList;
    TS->LoadFromFile(OpenDialog1->FileName);
    for(int i=0; i< TS->Count; i++)
      ExtractStrings(TSysCharSet()<< ';', TSysCharSet() << ' ',
        TS->Strings[i].c_str(), StringGrid1->Rows[i]);
    delete TS;
  }
}

Saludos.