i have Fedora installed on my machine with Windows XP (Dual Boot),

i was running out of disk space on linux....so i added more available disk-space (10GB) to linux partition by "Partition Magic" through Windows XP.

it successfully completed the operation, after that when i rebooted my machine to go to fedora,
it is displaying this message

Minimal BASH-like line editing is supported. For the first word, TAB lists
possible command completions. Anywhere else TAB lists the possible
completions of a device/filename.

grub>

I installed linux 2 days back,and not at all familiar with linux.
Now i can't even boot to XP.

Appreciate your help in advance.

Um, well, if I were you, I would need two things.
My Install disks
or
the partition that Linux was installed to (/dev/hd?)
If you know the second, then at the grub prompt, type in boot= (0,0) <----where the zeros are "disk,partition" - So the first zero is the Hard drive number (beginning with 0) and the second is the partition number (also beginning with 0)

If you don't have any idea what the hell I am talking about up there, then you had better just reinstall. This is recoverable, but it is safe to say that your problem comes from your use of Partition Magic on a working, in-use drive. I would bet that neither OSwill boot, as PM probably rendered them useless. Good luck dude, and if I can help anymore, please don't hesitate to ask. Nothing worse than having a non-bootable machine......