Could someone do for me, please,  a True Strength Index, 3 period, using a five minute time frame.  is this remotely possible.  Thanks a million!

True Strength Index has two settings, not one. An Indicator Formula for a TSI3,9 for example would be:

(XAVG(XAVGC9,3) - XAVG(XAVGC9.1,3)) / (.266931 * (ABS(C - C1) + .8 * (ABS(C1 - C2) + .8 * (ABS(C2 - C3) + .8 * (ABS(C3 - C4) + .8 * (ABS(C4 - C5) + .8 * (ABS(C5 - C6) + .8 * (ABS(C6 - C7) + .8 * (ABS(C7 - C8) + .8 * (ABS(C8 - C9) + .8 * (ABS(C9 - C10) + .8 * (ABS(C10 - C11) + .8 * (ABS(C11 - C12) + .8 * (ABS(C12 - C13) + .8 * (ABS(C13 - C14) + .8 * (ABS(C14 - C15) + .8 * (ABS(C15 - C16) + .8 * (ABS(C16 - C17) + .8 * (ABS(C17 - C18) + .8 * (ABS(C18 - C19) + .8 * (ABS(C19 - C20) + .8 * (ABS(C20 - C21) + .8 * (ABS(C21 - C22) + .8 * (ABS(C22 - C23) + .8 * (ABS(C23 - C24) + .8 * (ABS(C24 - C25) + .8 * (ABS(C25 - C26) + .8 * (ABS(C26 - C27) + .8 * (ABS(C27 - C28) + .8 * (ABS(C28 - C29) + .8 * (ABS(C29 - C30) + .8 * (ABS(C30 - C31)))))))))))))))))))))))))))))))) - .1668296 * (ABS(C - C1) + .5 * (ABS(C1 - C2) + .5 * (ABS(C2 - C3) + .5 * (ABS(C3 - C4) + .5 * (ABS(C4 - C5) + .5 * (ABS(C5 - C6) + .5 * (ABS(C6 - C7) + .5 * (ABS(C7 - C8) + .5 * (ABS(C8 - C9) + .5 * (ABS(C9 - C10))))))))))))

PCF for True Strength Index

In TC2000 version 7, Personal Criteria Formulas are always calculated using daily data. You could plot the indicator on a 5-minute chart using a Custom PCF Indicator however.