Just create a simple text file. lets call it start.txt
enter the following text:
C:\litecoin\litecoin-qt.exe -datadir=C:\Litecoin\DataLitecoin -rescan
Now replace the two paths so that the fit your system:
C:\litecoin\litecoin-qt.exe --> needs to point to you litecoin-qt.exe
C:\Litecoin\DataLitecoin --> needs to point to your directory that includes the wallet.dat file
-rescan (this command will trigger a rescan within the blockchain)
then rename the start.txt to start.bat and execute it (double click).
the litecoin client now should start and do a rescan.
Give feedback if this works for you.