>George,
>
>They are:
>
>12/18/00
>01/18/01
>
>
>After I append in the data (SDF), they appear as:
>12/18/1900 and;
>01/18/0001
>
>with SET CENTURY ON
>
>K

VFP wants dates in the form YYYYMMDD; if you have WSH 2.0 or later, you can use the VBScript.RegExp object to perform this translation reading the file and rewriting it fixed:

oRegExp = CREATEOBJ('VBScript.RegExp')
oRegExp.Global = .T.
oRegExp.Pattern = '(dd)/(dd)/(dd)'
=STRTOFILE(oRegExp.Replace(FILETOSTR(cFileToImport),'20$3$1$2'),cTempFileName)

Now import cTempFileName and it'll work just fine, converting all the dates to the correct format.

If you're also receiving dates from 19xx in your import, this won't fix the problem; may need to pull in the dates as character strings in an intermediary file and convert them using DTOC() after the fact.