Thanks, Sergey! I'm getting there, using the fll and the utc conversion you mention, but I'm stuck now, in that I need to supply a seed key to the hash generation, and Craig Boyd's hash() function doesn't provide for a key seed to be passed to his hash function. Thanks again! -Mark

>Hi Mark,
>
>Some ideas
>

Craig Boyd's vfpencryption.fll has function to generate MD5 hash
>

Windows Time File #9738 can convert datetime value to UTC. After that
>

>ltDt = ...
>ltDtBase = {^1970/01/01 00:00:00}
>lnSeconds = ltDt - ltDtBase
>

>