i have a seagate 250gb HDD (IDE), this HD has a corrupt MFT but luckily i already recovered all the FILES i need, the prob is when i format this HD a message alwayas prompt when the format is at 99% saying "can't format DISK". I also try to format it in a windows xp sp2 cd but i can't highlight this HD it says ""

What I'm gonna do? Can my I still use this HD or is it for replacement already?
Please enlighten me!!!

Im USING windows xp, 2GB RAM, AMD Sempron.Have you DELETED and recreated the partition before formatting?yup that's what I exactly did... did i make it wrong? Try hooking it up as a slave drive on a working machine and run chkdsk /r on it...
Let it run to completion.
Then DLoad the Free SeaTools from Seagate's site and use the tools to create a bootable CD.
Boot to the CD and under the drive preperation tools do a low-level format ( write zeros )
Both of these operations will take some time so be patient.
When finished try the Windows format on it to make sure it is usable...