How to configure Lotus Notes to not show images in emails?

"Disclaimer: I'm not a Lotus Notes user. I found this workaround here:

You can block these external images
from loading by editing your current
location document (bottom right of
your screen, select Edit Current...)
and specifying a proxy server of
0.0.0.0:80.

This tells Notes to use a non-existent
proxy server to load the images.

Edit: which version are you using? Version 8 seems to implement this feature:

See here: Discovering Notes 8: Automatic loading of images in HTML newsletters"