To PM someone, you click on their user name and you will get a drop down menu with options. One of them is to send a private message to that user.

Another way is to go to the Tool Bar at the top of the page, User CP, click on that, at you will have a list of menu items on the left. One of them is to send a private message. If you know the user name, start typing it in the send to box and you will get a list of users that start with that name.

There is also a members list on the tool bar, if you have the patience to go through and try to find that user, you can do the same thing by clicking on their name and send them a private message.

I hope you can get the IVSM issue taken care of...allergic reactions are no fun at all!