Hi, I downloaded Steam and LiS episode 1 as it's now free, but I can't play it.

When I clic on Play a message appears "Preparing to launch game", then the status of the game says something like "Executing" (i'm translating from spanish) and then "syncing" appears for just a second.
Then nothing happens.

I updated everything with Windows Update.
I verified integriry of game through Steam
I checked the requirements of LiS just to be sure, my PC should be able to run it.
I already have got the latest version of DirectX (11) and the latest update of my graphic card, AMD.
I installed the vcedist_x86.exe (I have a 32 bits os) file from the game's folder.
Restarted the PC several times.
Uninstalled the game and then reinstalled.
Executed steam as admin
I disabled the antivirus several times.

Still nothing
Any ideas to make it work?

My PC specs: Windows 7, 32 bits, 4GB Ram, AMD A4 3400 APU Radeon HD Graphs, 2.70 GHz, desktop