[XeTeX] XeTeX in Linux

[VAFA KHALIGHI]

I know there are some samples in the XeTeX home page which is only suitable
for mac, but I am just  a linux person and I have tried to activate any of
the linux fonts by the follwing code
--------------------------------------------
\documentclass{article}
\usepackage[mathcal]{euler}
\usepackage{fontspec,xunicode}
\setmainfont{name of the font}
\setmathrm{name of the font}
\setboldmathrm{name of the font}
\begin{document}
This is just a test.
$$(a+b)^2=a^2+2ab+b^2$$
\end{document}
------------------------------------------------

But I just got errors and the version of XeTeX that I have is 0.996.

Is there anyway that you can use PSTricks completely in XeTeX. From my
experience some do but just need to know how can I employ PSTricks fully in
XeTeX?
One more question, I just heard that XeTeX 0.998 will be included in TeXLive
2008, is that correct?


Thanks
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