Hi Shankar,
Does it matter whether yt part is appended or prepended or somewhere in the middle ?
From what you've sent, it looks like it should be okay. But I'm not entirely positive, you'll just have to test it out, I suppose. If it's not, it will fail with errors about not finding libraries, or GLIBC errors, or something along those lines. Hopefully it won't! :)
I was told by NCSA that wxpython=1 is needed for X-forwarding. Is that true ? Or I can just go back to wxpython=0 and install.
I'd say just go back to wxpython=0 -- it's only used by the wxAgg backend in Matplotlib and the yt GUI reason, but it looks like Steele is missing the necessary backend libraries, all of which are a huge pain to install. You should be fine without it. Good luck! -Matt