Add a couple of fields
e.g here's one I did for RBS from NYSE on 13 Apr until today 19 apr
Add to your data the ticker / symbol
change time format as I've got it
you can ignore last two fields Vol and Opneint
Now it converts simply to metastock.
<TICKER>,<DTYYYYMMDD>,<TIME>,<OPEN>,<HIGH>,<LOW>,<CLOSE>,<VOL>,<OPENINT>
RBS-I,040413,093000,25.7,25.7,25.7,25.7,1300,0
RBS-I,040413,110000,25.6,25.6,25.6,25.6,400,0
RBS-I,040413,115000,25.7,25.7,25.7,25.7,1300,0
RBS-I,040413,120000,25.7,25.7,25.6,25.6,400,0
RBS-I,040413,122000,25.56,25.56,25.56,25.56,1000,0
RBS-I,040413,124000,25.55,25.55,25.52,25.52,1000,0
RBS-I,040413,143000,25.6,25.6,25.6,25.6,1000,0
RBS-I,040413,151000,25.53,25.53,25.53,25.53,500,0
RBS-I,040413,153000,25.6,25.6,25.6,25.6,100,0
RBS-I,040413,154000,25.54,25.54,25.54,25.54,800,0
RBS-I,040414,093000,25.55,25.55,25.55,25.55,900,0
RBS-I,040414,105000,25.54,25.54,25.54,25.54,2000,0
RBS-I,040414,110000,25.53,25.55,25.53,25.55,1900,0
RBS-I,040414,114000,25.52,25.52,25.52,25.52,300,0
RBS-I,040414,120000,25.52,25.52,25.52,25.52,900,0
RBS-I,040414,121000,25.55,25.55,25.55,25.55,800,0
RBS-I,040414,122000,25.55,25.55,25.55,25.55,1800,0
RBS-I,040414,135000,25.51,25.51,25.5,25.5,1200,0
RBS-I,040414,141000,25.54,25.54,25.54,25.54,400,0
RBS-I,040414,145000,25.5,25.5,25.5,25.5,700,0
RBS-I,040414,150000,25.54,25.55,25.54,25.55,1400,0
RBS-I,040414,151000,25.5,25.5,25.5,25.5,2000,0
RBS-I,040415,093000,25.15,25.15,25.15,25.15,6700,0
RBS-I,040415,094000,25.25,25.35,25.25,25.35,1200,0
RBS-I,040415,103000,25.26,25.26,25.25,25.25,1200,0
RBS-I,040415,112000,25.3,25.3,25.3,25.3,1100,0
RBS-I,040415,113000,25.25,25.25,25.25,25.25,2500,0
RBS-I,040415,120000,25.3,25.3,25.3,25.3,400,0
RBS-I,040415,125000,25.3,25.3,25.3,25.3,1000,0
RBS-I,040415,131000,25.26,25.26,25.26,25.26,1700,0
RBS-I,040415,132000,25.35,25.35,25.35,25.35,1100,0
RBS-I,040415,133000,25.45,25.45,25.45,25.45,1100,0
RBS-I,040415,134000,25.35,25.35,25.35,25.35,200,0
RBS-I,040415,141000,25.36,25.36,25.36,25.36,100,0
RBS-I,040415,143000,25.36,25.36,25.35,25.35,500,0
RBS-I,040415,153000,25.4,25.4,25.4,25.4,8000,0
RBS-I,040415,155000,25.4,25.48,25.4,25.48,600,0
RBS-I,040416,093000,25.29,25.29,25.29,25.29,2000,0
RBS-I,040416,103000,25.31,25.31,25.3,25.3,1700,0
RBS-I,040416,110000,25.33,25.33,25.33,25.33,100,0
RBS-I,040416,111000,25.33,25.35,25.32,25.35,1100,0
RBS-I,040416,115000,25.38,25.39,25.38,25.39,600,0
RBS-I,040416,121000,25.4,25.4,25.4,25.4,1000,0
RBS-I,040416,125000,25.4,25.4,25.4,25.4,400,0
RBS-I,040416,133000,25.4,25.4,25.4,25.4,100,0
RBS-I,040416,145000,25.5,25.5,25.5,25.5,300,0
RBS-I,040416,150000,25.5,25.59,25.5,25.59,300,0
RBS-I,040419,100000,25.55,25.55,25.55,25.55,400,0
Good luck