Win XP Remote Assistance Woes

Hi there.

 

I recently installed NIS 2009 on my parents' brand new Dell, which has Win XP Home Edition. 

 

They frequebntly encounter computer issues and I was hoping to be able to use Windows' Remote Assistance to help them out.  Alas, I've not been able to do so and I suspect the issue is with NIS.  I've seen several posting in these forums pertaining to Windows Vista, but not Win Xp.  Any guidance would be appreciated.

 

Thank you.