could anyone write simple codes for me

hi there
sorry for my poor English. I can't program a custom indicator after reading the MQL4 course wrote by coder's guru. plz someone help me. thx vm.
it's very simple and I can use Excel to do this, however, I can't write the codes.I just want to draw three lines in the main chart window.

1st line=MIN(the lows of last 12 bars)+(MAX(the highs of last 12 bars)-MIN(the lows of last 12 bars))*2/3
2nd line=MIN(the lows of last 12 bars)+(MAX(the highs of last 12 bars)-MIN(the lows of last 12 bars))*1/3
the first 2 lines should be drawn until 5 time-units later (not move forward! for details plz see attachment)
3rd line=CLOSE(last bar)+[(CLOSE(last bar)-CLOSE(the bar before last bar)]*0.618

the xls attachment contains the detail and the 3 lines
plz do me this big favor
thx

You can find it in the zip file.
If you don't mind, how do you use them?

THX SO MUCH, ubeee
I think I can't accurately explain how to use it coz my bad english but I try my best
I just want to define the area above the 1st line as bullish area and the one below 2nd line as bearish area, otherwise trendless. the 3rd line measures the angle of the trend to see if the trend is interrupted. I'll look at the hourly-bars (stock) or 4-hourly-bars (currency) if any change of day-trend defined by the 3 lines appears. It's not an automatic program trading system actually.
anyway, can the first 2 lines be drawn to next 5 days?
eg. supposing the latest bar is 2007/12/31, can the first 2 lines be drawn to 2008/01/05 according to the numbers in the eg.xls. the data of 2008/01/01 don't exist, but still count 12 days back from 2008/01/01. the range is 2007/12/17 to 2008/01/01. though 11-day data only, we still find the highest high and lowest low in the data and calculate the numbers of the first 2 lines. when 2008/01/02, we have 10-day data, and so on.
many thx again ubeee

Yes. Try this new version.
Thanks for the explanation.