Lotta,
To use the search function here, go to the top of this -or any page here- and look for the second blue bar.
The first one has "Home" on it - the second one has "Lof in/Log off". Go to the other end of that bar and click on the one that says "search". In order to search only in the Lyme forum, be sure you always enter the word 'Lyme' first then your search terms. There's no need to use the apostrophe on each side of the word though.
If it still doesn't make sense, please email me!