identyfying drive type is easy, take side off and if it has a big wide cable and connector its PATA if it has a thin cable and connector its SATA. Quick way to re-install since your drive isn't completely dead. Keep original drive in place and install new drive alongside old one. Download a copy if Hiren's boot CD
http://www.hirensbootcd.net/ burn it to a CD using ImgBurn
http://www.imgburn.com/index.php?act=download if you don't have anything to burn an iso stick in cd drive and boot pc. select boot from CD if asked and select boot mini XP. After a couple of mins you will see a windows xp desktop and hiren on the taskbar. Click that a window opens and click menu backup and ghost. Symantic ghost will start and in there you select copy drive to drive and selct old drive as source and new drive as destination. After a while this will complete, shut down PC and remove old drive and plug new drive into where old one was. Start PC and your done. Take about 20-30 mins all in and will be as it was with no having to re-install everything as you have made a perfect clone of one drive to the other. If you or anyone else needs more detailed information let me know and I will do a tutorial with pics.
Note ghost should be licensed if it isnt and that bothers you then select drive image XML instead. It will do the same job and is free but I am not as familiar with it so would have to have a look and see how to do it as tell you from memory.