Nonsense! Your computer would have to have some outrageously low memory installed for that to be the case. Unless, of course you are using some ancient machine with 640K of RAM. But even then, I think it should still fit.

You could try an array as well, just split the string every 5000 characters or so. Although, I don't think that will help much, if at all.
We'll need to see your code in order to give any further advice.