Canadian69- Thanks for your reply. I will try fixmbr as soon as I get home from work. (Although that is what may have made this HDD inaccessible in the first place)
Sturm- Can I ask what you mean by "copying settings from my other 250"? How exactly did you do this?
And can either of you suggest a program that would fix my partition tables? Maybe a free one perhaps?
Thanks so much for your help. Really just looking to learn more at this point.