ms sql server 6.5 & datetime

hi, i have problems with sql 6.5 and delphi accesing datetime fields.

i'm working with:

delphi c/s 3.02 (bde 4.51)
sql server 6.5 sp5a

when use in w95 all work OK., but when work in winnt 4 sp4 (server or
workstation ) bde report
"SQL Error Syntax error converting DATETIME from characters string"

try insert dates in somes months (january,april,aug,decem) causes the error
other dates work fine


sorry by my bad english

Adrian Lorenzo