Showing data from a table based on infos from another table!

[anarchoi]

Ok let me explain:

i have 2 tables in my database : THREAD, and POST

THREAD's rows are: THREADID, TITLE + FORUMID + REPLYCOUNT + VIEWS
POST's rows are: THREADID, PAGETEXT and PARENTID

i'm a big php newbie... I want to display the LAST TWO messages (highest THREADID) of my forum number 99 (FORUMID=99).

I can probably do that, but the problem is that the text of the message is located in another table.. and it's getting too hard for my low-skilled brain lol

so basically I would like to check in "THREAD" for the highest THREADID where FORUMID=99, display the TITLE, REPLYCOUNT and VIEWS, and then check in POST for the same two THREADID's where PARENTID=0 (meaning it is the first message in the thread) and finally display the PAGETEXT !

Could anyone give me a PHP code that would display that?
thanks a lot and sorry for bothering you with my newbie questions!