Belkin N USB F5D8053 Wireless Adapter disconects randomly

Hi everyone,

I installed the new OpenSUSE 13.1 on a computer a month ago and I have been having trouble with my Wireless Adapter. I've been searching for a while and I ended up at several pages that were telling me all the same: downloading the Ralink drivers and install them manually. Until these days I didn't have time enough but now I've been trying to install after downloading them (I had problems with the make command) and after making the changes asked and installing the necessary packets, I came across this error when doing $make:

~/Downloads/2010_0709_RT2870_Linux_STA_v2.4.0.1> make
make -C tools
make[1]: Entering directory `/home/qdsk/Downloads/2010_0709_RT2870_Linux_STA_v2.4.0.1/tools'
gcc -g bin2h.c -o bin2h
make[1]: Leaving directory `/home/qdsk/Downloads/2010_0709_RT2870_Linux_STA_v2.4.0.1/tools'
/home/qdsk/Downloads/2010_0709_RT2870_Linux_STA_v2.4.0.1/tools/bin2h
cp -f os/linux/Makefile.6 /home/qdsk/Downloads/2010_0709_RT2870_Linux_STA_v2.4.0.1/os/linux/Makefile
make -C /lib/modules/3.11.6-4-desktop/build SUBDIRS=/home/qdsk/Downloads/2010_0709_RT2870_Linux_STA_v2.4.0.1/os/linux modules
make: *** /lib/modules/3.11.6-4-desktop/build: No such file or directory. Stop.
make: *** [LINUX] Error 2

So, the build folder that should be in the filesystem just doesn't exist. I tried to fix this by downloading the package build for building rpm (as it was requested in a post), but didn't work, and know I don't really know what to do next. It's really annoying having the WiFi disconected randomly and then for a few time it doesn't accept the network password and keeps asking you util it gets right...
It's a WPA password the one that the router uses, in the web it was said that this was the problem and was why I had to reinstall the drivers with the WPA properties enabled.

Thanks in advance for your help :)