read input file's data in 2 parts? (file's separated by a #)

Someone help me with this(pls)! @_@
it should be fairly simple for most programmers...

let's say this is my input file:

//i want to write a program which calculates word frequency
//--------------------------------------------------------

Hello this is a test  //lines 1-3 are the lines i want to read
This appears three times in this test
some words contain digits such as 10mar 2003
#                    // this works like a divider -- below are some words to calc freq
This                 // find the word frequency of "This"
test                 // find the word frequency of "test"
10mar                // find the word frequency of "10mar"
2003                 // find the word frequency of "2003"

//end of file
//--------------------------------------------------------------
Sample output:
THIS:3
TEST:2
10MAR:1
2003:1

------------------------------------------------------
Now how can I read only the top part and not count the word frequency in the bottom part?
Example: By right, "this" only appears 3 times, but I'm unable to write the code such that it skips counting the bottom "this" as well. Can someone teach me with the code to do this?