Vista - Really stuck with subsequent web services call checkingusername/password

Hi,

My next project is to integrate our order system (ASP.NET) with our
parent company (JAVA) using web services. I've managed to get the web
service authentication working by sending a username/password in the
header using the code from the following URL. However, the username/
password gets checked on all the subsequent calls as well which is
redundent. I need to bind it to an object and use the object to make
all the subsequent calls on the same .asp page (maybe a token). One
method is to create an order, another to add the products all on the
same page. I would really appreciate it if anyone could provide me
with a sample code or point me to a site where I can see a working
example on how to do this.

http://www.keithelder.net/blog/archi...-Password.aspx

Thank you
M.