We believe that your issue has been closed by the upload of
Version 0.99.18 of grml-terminalserver from Michael Prokop <mika@grml.org>.
The explanation is attached below

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Format: 1.8
Date: Wed, 11 Jan 2012 18:32:15 +0100
Source: grml-terminalserver
Binary: grml-terminalserver
Architecture: source all
Version: 0.99.18
Distribution: grml-testing
Urgency: low
Maintainer: Michael Gebetsroither <gebi@grml.org>
Changed-By: Michael Prokop <mika@grml.org>
Description: 
 grml-terminalserver - terminalserver for grml to boot via PXE
Changes: 
 grml-terminalserver (0.99.18) grml-testing; urgency=low
 .
   * [41c1fa7] Get rid of grml2hd specific dialog and code
     [Closes: issue1117]
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Pending in git: http://git.io/ZZ-Ypg

grml2hd bootoption doesn't exist any longer, so the grml2hd dialog should go:

  http://michael-prokop.at/screeni/gkrellShoot_11-12-24_093832.png