I am installing a Western Digital Caviar WD2500 EIDE Hard Drive 250 GB, in a Dell Optiplex GX150, w/ an Intel Pentuim III 1ghz Biso version A09 Cash 256. My problem is that it is not recongnizing the capacity of the drive all it show is 71MG. How do I get it to recongnize the whole 250 GB drive? So that I can install the OS. Thanks in advance for any help