IIS6, access to path… is denied when using virtual directory to shared folder on a remote computer

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IIS6

I created a virtual directory on IIS6 to access files on a shared located on a TERA station.

I have a website that has to retrieve images from the TERA station through the virtual directory

TERA station IS NOT on the same domain as the web server that has IIS6.

How should I set permissions or authentication method for the virtual directory so that the website can have access to remote files through that virtual directory? Because whatever I do, I get the message: access to path … is denied

What I have tried:

Authentication method used for the website is : Integrated Windows authentication, because i need to track operations on the website by the windows account of the user.

i did the following based on something i read on code project:
i created a local user (my_user) on the web server, and created a local user on the TERA station with the same name and same password.
i allowed anonymous access to virtual directory, and set my_user as the windows account to use for anonymous access.

that didn't work...

i created a new application pool and used my_user as an identity.. and used the new application pool for the virtual directory... that didn't work neither