This is easy...

1) Set HFS in 'Expert mode' (Press F5 to switch between modes)
2) Go to HFS's
Menu >
Other options >
Login realm...3) Write there the text you want, like:
LOGIN: rsload.net, PASSWORD: rsload.net
This only applies to v2.3x versions, since in v2.4 the login system changed. Leave a reply if this has solved your question.
Cheers,
Leo.-