>Well, since I was in a rush, I did in fact reinvent the wheel. I'm posting it here just in case anyone has need of it. The following function will accept two time strings (attained by using the TIME() fucntion) and return the hours, minutes, and seconds between the two times. It will not return days, however, since I had no use for it. So, if the difference between the two times is greater than 24 hours the result will be incorrect.
>
>********************************************************************
>Procedure TimeElapsed &&@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
>********************************************************************
>Parameter pTimeStart,pTimeEnd
>PRIVATE xBegHour,xBegMin,xBegSec,;
> xEndHour,xEndMin,xEndSec,;
> xHour,xMin,xSec,;
> xElapsed,xError
>
>xError = "BAD TIME DATA"
>
>IF LEN(pTimeStart)<>8 or LEN(pTimeEnd)<>8 or ;
> SUBSTR(pTimeStart,3,1)<>":" or SUBSTR(pTimeStart,6,1)<>":"
> Return xError
>ENDIF
>
>xBegHour = VAL(SUBSTR(pTimeStart,1,2))
>xBegMin = VAL(SUBSTR(pTimeStart,4,2))
>xBegSec = VAL(SUBSTR(pTimeStart,7,2))
>xEndHour = VAL(SUBSTR(pTimeEnd,1,2))
>xEndMin = VAL(SUBSTR(pTimeEnd,4,2))
>xEndSec = VAL(SUBSTR(pTimeEnd,7,2))
>
>if xBegHour > xEndHour
> xHour = (24 - xBegHour)+xEndHour
>else
> xHour = xEndHour - xBegHour
>endif
>
>if xBegMin > xEndMin
> xMin = (60 - xBegMin)+xEndMin
> xHour= xHour - 1
>else
> xMin = xEndMin - xBegMin
>endif
>
>if xBegSec > xEndSec
> xSec = (60 - xBegSec)+xEndSec
> if xMin = 0
> xMin = 59
> xHour= xHour - 1
> else
> xMin = xMin - 1
> endif
>else
> xSec = xEndSec - xBegSec
>endif
>
>xElapsed = ALLTRIM(STR(xHour))+"h "+ALLTRIM(STR(xMin))+;
> "m "+ALLTRIM(STR(xSec))+"s"
>
>Return xElapsed

Have you ever heard about SECONDS() function? It does alwost all your job.