change html font size ssh

[nwsco]

hello,
i have been reading quite a while now on this interesting
forum, only for one reason:
i want to change the default font-size for html on my iliad.
(it starts much too small standard, and that cant be set by default....)

so i have done loads of things mentioned here, and i am now as far as that i have installed mrxvt.

Can anyone help me as to where i need to be to change this?
(or give a good pointer in the right direction?)

thanks a lot so far!
nwsco