Combo,
it's as easy as using the Word Pad...
... and/or a spread sheet. I open the text file in Pad and then use edit-replace to sub or change the characters needed, spaces too. Other word processors may be faster but I find the Pad simple to use. May need a spread sheet to shuffle, add or delete numbers, ie: changing date from mm/dd/yy to dd/mm/yy, deleting bonus nrs, etc. Others here may suggest a better way, but I find it works for me, doesn't take that long once you get the hang of it.
I also have Ion Salius prog to reverse the order of draws, as is needed for his lotto files.
Let me know if you need more specifics,
Cheers,