repair outlook

[coli1]

I am having a large outlook pst file and I am using Outlook 2007 and my Os is windows7. The total size of that is 2.04 Gb. I have read that exchange dont allow the size of .pst file more than 2gb, but I dont know how it increased. and when I try to open the .pst file outlook says cannot open and crashes. I have tried many demo versions available online. None of them are useful. Could you help in recovering the file!!!!!!!!!!!!!!!!!!!!!!

[rawgeek]

whats the version of exchange?