Hmmm
Well first decide the appropriate forum for your car
for MKI or MKII galaxy, VW Sharan or Seat Alhambra
clicking on any of the first 3 car pics gets you here in the
'old banger' section
That way we don't have to mingle with them in the MKIII and posh car brigade see?

In the forum you'll see a list of 'threads' or 'topics'
which are mainly questions on problems or discussions on related stuff
You can start you own thread or topic ( you already have of course)
and reply to that or threads started by others using grey 'click to reply' box
or just start typing in the text box below for a plain text reply
If you have more questions on different subjects you go to main forum
and click the grey 'click to start new topic' box
Its usually best practice to start a new thread for a new/different topic
or it can all get a bit confusing.
For instance if a topic headlined 'how do I adjust my seat?'
drifts into talk of wheel bearings, this can make hard to catch up stuff.
There's always a bit of 'mission drift' on forums of course, we've all done it
but the idea is to try and keep topics related to the OPs ( original Poster's) headline question.