Depends on what OS you're using. All versions of Windoze include a full DOS emulator. If you can't find an icon for MS-DOS Prompt, hit Start, Run, then type either "command" or "cmd" in the box and hit enter. Depends on which version of Windoze you're using.
XP apparently supports both, but I'm not sure what all the differences are. "command" seems to load a rather old emulator. It doesn't support a lot of the internal things I've gotten used to in later version of the DOS emulators, like being able to use wildcards when changing directories.
Try any method to open a DOS box and see whether trying to run CSCRIPT yields a "bad command or filename" or the equivalent. If not, you can write a VBS and use CSCRIPT to run it. It's not the Basic you're used to, but it's similar. More of a super-set. Nearly everything in the old flavors of Basic will work, but to take full advantage of it, it helps to learn about Objects, Properties, and Methods.
With the sample input file you showed, if I were doing it, I'd definitely prefer to do it in PERL. The only semi-tricky part is that some of the fields are comma-delimited and some aren't. I assume it's not fixed-width and it really is set up so that sometimes a comma is a delimiter and sometimes a space is. Still, not a biggie if it's consistent about that inconsistency. <g>
Though CSCRIPT has similarities to the flavors of Basic you're used to, there's still a bit of a learning curve. If I *had* to pick up a new language, I'd go with PERL. It doesn't have any similarities with Basic (it's more like C than anything else I've seen), but there's extensive help available online and in hard copy, and it's very fast, powerful, and has cool functions to make it really easy to do things like parsing text files.