First convert the space separated file to a CSV file. You can do that normally with a ' ' -> ',' search and replace.

Next, check the format of the CSV file. If it's in Yahoo or HistData format, you can convert it directly with one of the included scripts. If it's an exotic format, it might make sense to download the current Zorro 1.52 beta version. It can convert any exotic CSV format with the dataParse function.

Zorro has many normalization functions, including CDF.