will mountain lion 10.8 delete my programs on my cpu now
No it won't, but it is always a good idea to do a complete backup before installing a new OS....
Which specific programs are you referring to...
And BEFORE attempting ANY Major Update or Upgrade... BACKUP your Current Drive and Operating System.
No, but some applications, including all PowerPC ones such as Microsoft Office 2004 and earlier, may not be usable afterwards, and won't be in the case of PowerPC software.
Retrieving data ...