JScript file writing

[obviousunknown]

I know the basic syntax for writing to a text file using Jscript.

objText.WriteLine('Radom stuff')

the problem is that everytime it writes something new (a changing variable) it overwrites what ever was in the text file before.
Is there a way to only write to the next line instead of overwriting everything?

[Khalid Ali]

This is Microsoft technology related question..may be ASP forum is a better place