If you need POSTIE -
http://download.cnet.com/downloads/0-3356723-100-902918.html?tag=st.dl.10001-103-1.lst-7-2.902918

As POSTIE is shareware, you could use BLAT..

BLAT is available from - http://www.interlog.com/~tcharron/blat.html

According to the following page - http://pages.infinit.net/che/blat/blat.html it looks like the efforts are being merged together.

HTH,

- Kent