I bought a WD-52525 for $2700 at Best Buy the week before the Super Bowl. It will accept a 720p signal. I know that they aren't that cheap now, but I'd return the 327 and wait a little while for the 525 to drop down to a similar price. Best Buy also gave me 0% financing.
Basically, you will never get a good, readable PC display if you can't input a native signal. Given the limitations of the 327 with respect to the inputs it can accept, and since you want to use a PC with it, it seems like a no-brainer to return it.
Take a look at the upgrades that the 525 has over the 327. It has an RGB port for PC connection. It has an HDMI port. It has a cablecard and an ATSC tuner. It has firewire I/Os. And it will accept a 720p signal. And for about the same price if you wait for a sale.
Basically, you will never get a good, readable PC display if you can't input a native signal. Given the limitations of the 327 with respect to the inputs it can accept, and since you want to use a PC with it, it seems like a no-brainer to return it.
Take a look at the upgrades that the 525 has over the 327. It has an RGB port for PC connection. It has an HDMI port. It has a cablecard and an ATSC tuner. It has firewire I/Os. And it will accept a 720p signal. And for about the same price if you wait for a sale.