No...but, you may have some residue left over. Check your program files directory. Usually, if this was a game, your save games are not deleted. But, since I have no clue what was deleted, it is hard to find out.
 
Oh, wait. Yes, you can get your files undeleted.
http://www.officerecovery.com/freeundelete/
or
http://www.disk.fdepot.com/Undelete.asp
 
 

Hey!
I have no idea how to do this,but i want to recommend you to back up more often.I mean you'll be able to restore lost data.There is one good software for it
 
http://www.acronis.com/homecomputing/products/trueimage/
http://www.acronis.com/homecomputing/download/trueimage/
 
Good luck next time

What OS? WinXP's system restore is a beautiful thing sometimes!

Only sometimes

I recommend that you use [censored] DataRecoveryWizard to recover your data.
The software provides very useful functions for data recovery:
DeleteRecovery, FormatRecovery, AdvancedRecovery, RawRecovery.
 
This program is an efficient disk recovery software providing
you a complete answer to data loss.
 
You can download the demo version of [censored] DataRecoveryWizard.
http://www.[censored].com/download.htm
 
Run the program and you can select the any recovery mode
"DeletedRecovery", "FormatRecovery" and "AdvancedRecovery".
 
See more:
http://www.[censored].com
http://www.[censored].com/datarecoverywizard/recover-deleted-files.htm
http://www.[censored].com/datarecoverywizard/recover-lost-partition.htm
http://www.[censored].com/datarecoverywizard/recover-formatted-partition.htm
http://www.[censored].com/datarecoverywizard/recover-fdisked-drives.htm
http://www.[censored].com/datarecoverywizard/recover-lost-files.htm
http://www.[censored].com/datarecoverywizard/recover-repartitioned-drives.htm
http://www.[censored].com/datarecoverywizard/recover-scandisk-chkdsk-disk.htm
http://www.[censored].com/datarecoverywizard/recover-ghosted-image-data.htm
http://www.[censored].com/datarecoverywizard/recover-encrypted-data.htm