I assume you want to get the price for the first bar, so this is what you can do.
for dataseries1:
If currentbar data1 = 1 then symbol1 = Open;
for dataseries2:
If currentbar data2 = 1 then symbol2 = Open data2;
in the symbol selection window just choose "3rd Party Directory".
Then add the directory in which you saved your ASCII files with "New Dir...".
Hope this helps
If you have Tradestation/Metastock compatible software try this one:
http://www.forexite.com/free_forex_quotes/forex_history_arhiv.html
It provides historical 1min and daily data.