<PAGE> 1
EXHIBIT 99.8
GRUNTAL & CO., L.L.C.
One Liberty Plaza
New York, NY 10006-1487
212/820-8200
www.gruntal.com
GRUNTAL & CO.
Investment Advice Since 1880
July 31, 2000
Board of Directors
BioShield Technologies, Inc.
4405 International Boulevard, Ste. B109
Norcross, GA 30093
Members of the Board:
We hereby consent to the inclusion of our opinion letter to the Board of
Directors of BioShield Technologies, Inc. ("BioShield') as Appendix C to the
Joint Proxy Statement/Prospectus of BioShield and AHT Corporation ("AHT") as
filed with the SEC on August 3, 2000 relating to the proposed merger transaction
involving BioShield and AHT and references thereto in such Joint Proxy
Statement/Prospectus under the caption "Opinion of BioShield's Financial
Advisor." In giving such consent, we do not admit that we come within the
category of persons whose consent is required under, and we do not admit that we
are "experts" for purposes of, the Securities Act of 1933, as amended, and the
rules and regulations promulgated thereunder.
GRUNTAL & CO., L.L.C.
By: /s/ Roger C. Kahn
---------------------------
By: Roger C. Kahn
Its: Senior Managing Director
