You're welcome to ask for help. That's why we're here
It works the same way as with Bitcoin-qt or any other cryptocoins-qt originated from a Bitcoin fork: If, by checking on a block explorer, your coins are showing in your address, it means they have not been moved when you have tried to do a transaction using the Darkcoin qt wallet. That's great. Now you just need to use the original "wallet.dat" file containing the private key to that same address.
Now what you need to check is if the address with the coins is showing/available in your wallet-qt (if the "wallet.dat" file contains it's private key").
If not, than you will need to look for the original "wallet.dat" file, in a previous backup, or elsewhere in your computer (possibly in the old "darkcon" directory).
When you find this original "wallet.dat", do the following:
CLOSE the Dash-QT wallet. AFTER it's closed, rename the
wrong "wallet.dat" (the eventual new one inside the "dash" directory) to something like "wallet.dat.new" and then copy the
original (
correct) "wallet.dat" file (the one containing the PrivKey to the address you need) into the "dash" directory. Now, open the Dash-QT wallet again. If that is the correct (original) "wallet.dat" file, your coins will be showing in the balance.
I might have been very confusing here, sorry, but this is the kind of thing that is easier doing than explaining...
But remember: Always make backups!
No matter what cryptocurrency you make your transactions with, the rule is always the same: make backups. Always have an updated backup of your "wallet.dat" file, it's VERY important, because it contains the private keys to the addresses you control. Also, when you are careful enough (aware of change addresses) to keep a specific address, it's an important idea to do a "dumpprivkey [address]", so that, in case of any trouble with your backups, you can always "importprivkey [key]" to a new "wallet.dat" file.
I hope it works. If necessary, please come back for more help, because there are lots of other users much more experienced than me around here.