What you need is instructions with pictures.
Go to www.hmaservice.com, and register.
Click Service Information
Enter Sonata, 2005, 2.4 liter
Click Shop tab
Click Engine Mechanical System
Click Timing System
Click Timing Belt
Click Removal...this has pictures and instructions. Make sure you rotate the engine to No. 1 cylinder to Top Dead Center. I recommend you buy a white sewing pencil (has a soft white lead) and mark the alignment marks on the crankshaft, and the cam shafts. These alighment marks are notches with faded white paint in them, and the sewing pencil will make them easier to read.
Click Installation for the install.