I would consider this laptop a more DIY notebook. Those who buy it are content with its specs-performance-price and the others buy it to personalize the specs with upgrades due to its price.
It's the case of actual and advertised hard drive space. Your 250GB hard drive only has 232GB of usable space. Actual disk space is usually 7% less than advertised.
If you want the cleanest install, I would backup my files first to a CD or external hard drive then formate the whole hard drive and install Vista back in. The D: drive is a recovery partition that would reload Windows back into C. You...
I actually got the WUXGA and T8300 from pulls from my other Dell laptops. I'm sure you can find a screen and CPU on ebay at a reasonable price.
And yes, the T7200/7400/7600 are not compatible.
Yup, the only difference are the face plates. Some have different mounting holes that prevent you from swapping face plates but a large majority are the same. Glad you found a replacement. If you want the best blank media, buy taiyo...