I tried looking around for Pentium D processors, but they are pretty hard to track down at reasonable prices, and I just can't be bothered with ebay for this.
I have downgraded the HDD to the WD 500GB Black so I can try and squeeze a few more dollars outta the budget for a PSU. I'd like to get something decent enough to run the (upgraded) rig, and also leave some room for future addtions. I know my mate is planning on adding a tuner card, and I am sure he will end up adding more storage sooner or later.
I hear you, apache_lives. I tried talking him into building his own machine instead of buying this one, to no avail.
Having said that, he would still like to do some gaming, and still requires some decent storage. The only options he has is to upgrade, or buy a new system. As (I have already stated) he is unwilling to purchase a new system, I am simply offering what advice I can, given the parameters.
My buddy is not an avid PC user, and does not really require the latest and greatest. His gaming requirements are fairly minimal, (he still spends hours on his PS2), as are his other software requirements. I am going to chuck XP Pro. on this machine, as I have a spare license key doing nothing, and get him where he would like to be for as cheap as I can.
Also, a simple motherboard and CPU upgrade would still see all these purchases recycled into a multi-core machine anyway (well, maybe he would need some new RAM =P). Alternatively, I don't see why this build wouldn't make an ok beginner's HTPC.
For an Internet/E-mail machine with limited gaming those upgrades should really help. The new HD alone will probably amaze him especially with a clean XP install. Its never going to multitask as well as a dual/quad but it will be much faster than it was.
I had a P4 530 (3.0 ghz) I bought when LGA775 was new and its still running in a box I gave to my sister. I still maintain it and its not bad unless you try to multitask too much.
I think your friend will be happy and like you said you can move the new parts to a new box when he does decide to do a full upgrade. Glad to be of some help although looks like you did fine on your own