you must be warned that if you install or simply use your OS the deleted file can be overwritten!
when a file is deleted from the system its address is erased, but the data continues there as "garbage" until the system wants that space (a new file, an existing file that got bigger, defrag, swap, browser cache files...). in that case, garbage data is overwritten with another one and so it is almost impossible to recover that.
so:
if you have 2 or more partitions in your HD try 2, else try 3
if you deleted the file from the same partition that your Windows is installed, stop using Windows now and try 3 (do not use that Windows until you solve that problem, or you file can be lost FOREVER), else try 6
connect your HD as slave in another computer with Windows installed and use a program installed not in your HD. if you cannot do that, try 4
use a recover pendrive or a recover CD/DVD or a live OS from pendrive/CD/DVD to recover the data. if you cannot do that, try 5
install an OS in another partition (not in partition that your file was), but I do not recomend that (so complicated...). if it does not solve try 7
install a recover software in a different partition that your file was and recover it. if it does not solve try 7
pray. wait some time and think. pehaps you have previously backed up that file or there is its temporary copy in %temp% folder. i hope you will recover that file :)