Hello again.
Thank you very much.
I tried the 3.14 kernel but still got an error with the loading of the firmware.
For some reason, package firmware-realtek says that has the firmware for the rtl8188eu but in truth it does not...
I went and got the rtl8188eufw.bin file, copied to /lib/firmware/rtlwifi and ... voilá! Everything works fine now.
I think that if I did this copying of the rtl8188eufw.bin with the stock kernel, it would have worked also, but since everything is working, I left it like it is, with the 3.14 kernel.
Thank you very much. wattOs rocks in my very old Pentium3 1ghz with 256Ram 1nd 20Gb ATA (not SATA ;-) ) disk.
Fantastic distro!