Please use a better thread title than "urgent". This may be urgent for you, but it is not urgent to the people who volunteer their time to help others on these forums.
That being said, do you need to get your Linux partition(s) back, or are you OK with wiping them? Can you get access to a copy of the Windows 7 CD which contains the MBR recovery tools? Does your laptop have some sort of recovery partition or anything of the sort? Unfortunately the information that I've found
seems to assume you have a Windows CD or DVD.
What happened here is that you deleted your Linux /boot partition, which contains the files that tell GRUB (the boot loader) how to boot the various OSes installed on your computer. If Windows is the first partition on the hard drive, you might
be able to get away with running the following commands and the grub> prompt:
However, this will not work on newer version of GRUB, IIRC. Can you see anything that tells you what version of GRUB you have?
The easiest thing for you might be to boot your distro's LiveCD via USB (either a USB key or using a USB CD/DVD drive and post the results of "fdisk -l". Like I said, you'llneed to tell us whether you want to try to get your Linux partitions back for us to be able to help further.