Free Software To Recover Deleted or Lost Data (File) in Windows
You might be able to recover deleted files from a PC if it has not being over written. When you delete files the data itself is not deleted. It is just the index entry that tells the system where the data for those files is located gets erases. The area containing the deleted data is also now marked as free space so it is available for any new files to be written there instead. There is a free tool available for you to try recovering your lost file.

smallwei 4:37 pm on November 7, 2009
DataRecovery is a freeware that helps users to recover their files deleted. This tool can also be used to recover all the lost files due to the corruption or damage of your system. DataRecovery can also differentiate between NTFS, FAT32, FAT16, FAT12 hard drives. Thus, it can be efficiently used to undelete these drives and re-locate them to their prior locations.
Data Recovery works in Windows XP or Windows Vista. (Please let us know whether it works with Windows 7 or not) It has user friendly interface, able to retrieve NTFS compressed and EFC formatted files.
To use, you can run DataRecovery via a floppy disk or USB flash drive.
Here are some additional tips for using the tool:
http://tokiwa.qee.jp/EN/DataRecovery_EN.zip