are you sure you got an 64 bit operating system?
If you got an 64 bit os:
1. move to your aion dir (the dir should contain folders bin32, bin64, L10N..)
2. create a new text document
3. paste this
Code:
start "" "bin64\aion.bin" -ip:79.110.83.80 -port:2106 -cc:2 -noauthgg -ls -charnamemenu -lang:deu
replace "deu" with your language code
Code:
Deutsch = deu
English = eng
Français = fra
Russia = rus
Türk = trk
Polski = plk
Italiano = ita
Español = esn
4. Go to "Save as.." make sure you select at Filetype "all" then call your file "start.bat" and hit "Save"
5. now just doubleclick the new "start.bat" file to start your Aion client in 64 bit mode