No...
See Here for Upgrading to ML...
First check the Compatibility of your Mac...
Upgrade to Mountain Lion
Then... Before attempting any Major Upgrade... get yourself an External Hard Drive... and create a Bootable Clone Backup of your current Hard Drive...
By far the easiest way to make such a Backup, is to use something like
SuperDuper http://www.shirt-pocket.com/
or CCC http://www.bombich.com/
That way, should anything untoward happen during the Upgrade,
you will NOT LOSE ANYTHING.
(Get an EHD that is at least equal to your current Drive...)
Also, Check here for compatibility of 3rd party Software you may be using...
http://roaringapps.com/apps:table