I had a user with an archive.pst sitting on docs and settings/local settings/application data/office/outlook/archive.pst which I stupidly deleted when deleting her corrupt profile before creating a new one. I have run recuvaa twice now and although it finds it, it says it is 0 bytes in size and unrecoverable. It was nearly Gb in size and contained some very important emails. Is this common with .pst files? Can it ever be recovered? Anyone with any suggestions that can help me bring this back, I will gladly take you out to dinner and drinks as getting this back will save my life.

Maybe it's something simple and its in the recycle bin?

http://www.officerecovery.com/freeundelete/
http://undelete-plus.com/
http://www.cgsecurity.org/wiki/TestDisk
http://www.runtime.org/ called getbackdata first 5 files recovered are free.

Be careful not to install this software on the disk drive you are trying to undelete files from. since it
may use the data blocks on the disk thinking they are free to use, but it may be the locations of the
datablocks of the file you are trying to recover.