Outlook .pst errors

If you are having problems launching outlook or if you receive an error regarding errors in your .pst (personal file folder) you can try to run ScanPST.exe and fix problems. The program itself can be found in one of the following locations local disk:\Program Files\Microsoft Office\OFFICE12
local disk:\Program Files\Common Files\System\Mapi\1033\
local disk:\Program Files\Common Files\System\Mapi\1033\NT
local disk:\Program Files\Common Files\System\MSMAPI\1033
local disk:\Program Files(x86)\Microsoft Office\Office12
local disk:\Program Files(x86)\Common Files\System\Mapi\1033\
local disk:\Program Files(x86)\Common Files\System\MSMAPI\1033
Once opened you can browse to your .pst file which is generally located in the following folder local disk:\Documents and Settings\%user%\local settings\application data\microsoft\outlook for XP
local disk:\Users\%user%\appdata\local\microsoft\outlook for Vista/7
You then click repair and ScanPST.exe will begin a series of checks on your file. Once that is complete ScanPST.exe will ask if you want to create a backup of your file before you proceed with any repairs, give this a relavent file name and choose repair.