I got it working.
I had it as now
Code:
<!-- XFire Hack -->
<if condition="$post['field5']"><a href=http://profile.xfire.com/$post[field5]><img src=http://miniprofile.xfire.com/bg/$post[field6]/type/3/$post[field5].png width=149 height=29 border=0></a>
<br>
<a href="xfire:add_friend?user=$post[field5]" rel="nofollow">Add to xFire Friends List</a>
</if>
<!-- / End XFire Hack -->