login script & xterm

[ms419@freezone.co.uk]

Where should I put commands to be executed when I login, & when I open 
an xterm, but not when a shell is run on other occasions?

I want some commands executed when I login, but not when a shell is 
otherwise run, so I put them in my ~/.login, vs. my ~/.bashrc. 
Unfortunately, they aren't executed when I open an xterm.

I hoped there might be a ~/.xtermrc I could put them in, but I haven't 
found mention of an xterm initialization script anywhere in the 
documentation.

Also, I thought I could configure xterm to start as if with the -ls 
flag. Anyway, there's probably a reason it doesn't, like a login shell 
might break some application using xterm?

Where should I put them?

Thanks!

Jack