Cistera Networks (CNWT) 8-K Departure of Directors or Principal Officers

Cistera Networks

Attn:  Derek Downs

6509 Windcrest Drive, Suite 160

Plano TX 75024

Phone: (972_ 381-4699

October 28, 2008

Board of Directors of Cistera Networks:

Please accept my letter of resignation from the Board of Directors of Cistera Networks effective October 31, 2008.

Sincerely,

/s/ Cynthia A. Garr

Cynthia A. Garr

cc: Derek Downs

cc: Gregory Royal

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