hi. details on video card and power supply? do you play video games? what's the budget? are you plugging this into a stereo?
your list is pretty good, but i think the antec cube might be a weak link. the power supply it comes with is a special model, and it really crowds the processor. it also lacks a second front bay of any type, so you might want to consider that too. if you want something other than 2 usb and mic/headphones, like a card reader, you could be boned. however, it's certainly not terrible, and it is on sale at newegg for $80.
it isn't essential to use windows media center, but it's nice to have the option. if you choose not to use it, just ignore it and use other software. it does have likely the best interface. unfortunately, there are lots file type and drm restrictions. also, media center will not let you watch digital cable tv, in either standard or high definition. if you'd like to watch or record unscrambled cable with your htpc, windows media center is not for you. it will work with over-the-air digital tv and, for the next 2 months, ota analog. this is part of the media center program and not xp mce.
you won't be able to use 4GB of ram with any 32 bit os. leave half of it out.
this is the blu ray/dvd burner i'd buy
http://www.newegg.com/Product/...x?Item=N82E16827136154
i suggest getting an inexpensive hard drive to install onto, and use the big one for storage.
remote controls can be tricky. i have one, but i prefer the wireless mouse instead. if that doesn't do it for you, because of range or whatever, there's a couple ways to use a remote with a pc. all remotes currently are are either media center only, or normal. media center only remotes are available separately as a usb thingy, or packed in with dvr cards. some dvr cards don't have a usb receiver - instead the ir eye connects to the dvr card itself. these remotes should work with any version of windows.
an alternative is the imon product by soundgraph
http://www.soundgraph.com/Eng_/main.aspx
the retail boxes have apparently dried up, and they're pushing their product as oem, built into the case. these boxes cost more than $80. they include their own media centerish software, which is pretty bad. the remote does work very well, and with some DIY set up can be used for anything in any software. boxes with this usually include a small display that can show the time, news headlines, the weather, whatever. the "now playing" seems to work only with wmp/wmc, maybe winamp. there is a linux driver too, if anyone cares.
some sites to check out:
http://www.silentpcreview.com/
http://www.avsforum.com/avs-vb...5be4fcb2da0c0&t=940972
http://www.performance-pcs.com/catalog/index.php
http://www.videohelp.com/