Need help with an upgrade from 2.0ghz Celeron

[skidooosl]

I have been out of the loop for quite some time and need some advice on hardware I have been looking at for a low budget PC to use as an HTPC (gave away current systems mobo and CPU)

Currently it is a 2.0 ghz Celeron on a Soyo SY-P4I865PE Plus Dragon 2 with 2 x 512 mb PC 3200 DDR and gforce6800 XT (AGP)

Here is what I have been looking at for as a replacement

CPU:

Opteron 146 $86
http://www.newegg.com/Product/Product.asp?Item=N82E16819103598&ATT=19-103-598&CMP=OTC-pr1c3grabb3r

or

A64 3700+ $88
http://www.zipzoomfly.com/jsp/ProductDetail.jsp?ProductCode=80719-5&prodlist=pricegrabber

Mobo:

( would like to use micro ATX for a small cube case when I find a good one)
(also DDR and AGP would be nice but I can upgrade to PCIx if I need to)

http://www.zipzoomfly.com/jsp/ProductDetail.jsp?ProductCode=249005&prodlist=pricegrabber

Abit NF95

http://www.monkeycircuit.com/itemdesc.asp?ic=MBD-ABT-NF95&source=G2 - $62

Case:

http://www.zipzoomfly.com/jsp/ProductDetail.jsp?ProductCode=140137&prodlist=pricegrabber

or

http://store.pagecomputers.com/cata...ESSID=ifpcgsauepcktprc8r4489civ1#tab_overview

For a sound card ( need optical ) I was thinking
http://www.tigerdirect.com/applicat...004&SRCCODE=PRICEGRABBER&CMP=OTC-PRICEGRABBER


Should I maybe spend a bit more in any area? What would you recommend.

I would like to keep the cost down as much as possible but if it will make a large difference I could spend a bit more


Thanks

 

[skidooosl]

I like the looks of this

http://www.newegg.com/Product/Product.asp?Item=N82E16856110047

has anyone used this before?

if I put one of the listed CPU's and upgrade the GPU at some point would this be a decent system?