The native English speakers should be tolerant and not always expect good language skills from everyone. Since English dominates, the native speakers should pay the reciprocal courtesy of not heaping all the problems of having a common language on us foreigners. If you wish to ask for help about some problem, take some time to think analytically what your problem is. If your English indeed is very bad, do not start writing your English message before you have carefully outlined what it is that you wish to say or ask. First write a good explanation in your own language, then translate that into English.
Computers are such flexible tools.
Use a spelling checker. In time your skills will improve. I can guarantee that from my own experience. Computers and in particular Usenet practices have brought along much jargon and acronyms which can be incomprehensible even to an uninitiated native English speaker. There are some links to dictionaries and jargon files at the end of this page which may be of help in the deciphering dilemma.