Loading Historic Data Files on MT4

Hi can anyone help?

I downloaded a bunch of *.HST files for MetaTrader from FXDD and tried to load it following these instructions:

http://www.earnforex.com/blog/2008/01/quality-metatrader-historical-data/

However it's not working, anyone know how to load it?The chart keeps saying waiting for update and when i try the period converter it says 0 record written.

Thanks,

Alex