Safe place to write a file under Vista

[Richard Miller]

I am finding that, on some Vista machines with some user settings, it is 
not possible to write a file from Rev to the root C drive. Seems that 
Vista blocks this action. Does that sound about right? If so, where is a 
reliable, safe place to write a file (which will soon thereafter be 
deleted)? Is specialfolderpath("documents") safe?

Thanks.
Richard Miller