EFTA00587131.txt

"This Promissory Note is binding upon NIKOLIC and his heirs"

"SCHWARZ may extend the time of payment of this Promissory Note"

"NIKOLIC, as a principal of the GP"

"NIKOLIC's obligation... to pay to SCHWARZ, in cash or in kind, at NIKOLIC's discretion, 50% of each Carried Interest Distribution NIKOLIC receives fro"

"the Fund's investment in the amount of One Million Dollars ($1,000,000) in Blue Talon Data Systems, Inc."

"and Three Million Dollars ($3,000,000) in Digisight Technologies, Inc."

"the Fund's general partner, Biosys Capital Management, LLC (the "GP")"

"NIKOLIC shall execute and deliver SCHWARZ a new promissory note identical in all respects to this Promissory Note."