I HAVE BEEN USİNG MSG PLUS FOR A LONG TIME BUT RECENTLY I SENT MY PC TO BE FORMATTED AND PC WENT BACK TO THE BEGINNING THAT'S WHY I LOST MY DIARIES. THERE IS AN IMPORTANT DIARY AMONG THEM. IS THERE ANY WAY TO GET THEM BACK. IT IS SO IMPORTANT TO ME.
IF YOU DEAL WITH THIS PROBLEM, I WILL BE APPRECIATED.

Turn your capslock off please, and no need to doublepost.

Did you use online logging too? If so you should be able to login to your account on msgplus.net and view your chatlogs there. But if you didn't turn online chatlogging on (it is off by default) and someone did a format on your harddisk it is unlikely you'll be able to get your files back.

i'm really so sorry i thought that  there may be an archieve
is not there any way to get it?

In short, no. Messenger Plus! only recently gave us the feature to log conversations online. If you did not enable it, the files are all stored on the hard disk and nowhere else. When the disk was formatted, they were all deleted.

While it may be possible to get the files back with an undelete program, it might take a long time to find what you're looking for, if it's even still recoverable

then i have no choice  thank you for your interest