The trick was creating a Schema.ini file in the same directory as the csv file. There I could set the column names (and call those column names from my asp file) as well as set the length and type of the fields. More info on Schema.ini files here.

Thank you Marcus!!!!

and then, instead of spitting out all the data – I just did

if rs(3) = "243" then
(PRINT THE LINE…)
end if

And actually, ran into some complications because the data in the rs(x) was assumed to be a number, and I was comparing it to a (number-)string. So in order to "convert" the rs(x) into a STRING, I had to do this:

Dim strNum
strNum = rs(3) & ""

then I could do this:

if strNum = "1234" then
(PRINT LINE)
end if

Probably not terrible efficient technically – but thankfully the csv isn't terribly huge, so iterating through each line doesn't take more than a blink of an eye.