Dear Enrique,
sometime ago you asked me if XOTcl support is available on my
Win32-Openacs port of OpenACS: http://www.friendlybits.com/en/inf_tec_en/win32openacs_en/
This short message is just to let you know that I've just added to it XOTcl (1.5.5) and tcllib (1.9).
Hope it helps,
Maurizio