Aleksey, read sp_bindsession into the SQL BOL, speaks with MS SQL Team.

With VFP9 Beta DisconnectRollback new property i cannot use sp_bindsession !

If you want do this with a good property change it to ( name is not important ):

SQLSETPROP(handle,"DisconnectAction",0) && (Default) The transaction will be committed
SQLSETPROP(handle,"DisconnectAction",1) && The transaction is rolled back 
SQLSETPROP(handle,"DisconnectAction",2) && No Actions ( this is useful with a MS SQL shared session )

Fabio