Concatenate multiple columns by row and insert semi colons and spaces

Hi folks,
I am a newbie here in the Excel Forum but not completely new to Excel. I have a challenge with concatenating multiple columns and inserting semicolons and spaces.

The top of my sheet has fields to enter date, product, style etc. These I have been able to concatenate into a string with no problem. Part way down the page I have a couple of columns that the user needs to enter product sku numbers and descriptions. The rows are broken down into about 20 sections and not all rows will contain a sku and description. This will create empty rows in my 2 columns.

I have a row at the bottom of the screen where the concatenated string of data is displayed (it's used as metadata for images).

The challenge is to start at the top of the 2 columns and concatenate the contents until it reaches the last row in the product info section. Between the contents of each row I need to place "; " semi colon and a space. The empty rows need to be ignored.

Ahh, just realized I can add a file so I hope it helps see what I am trying to do.
Metadata sheet-updated.xls

The end result I am hoping for...
092812-transitional-mirror; transitional; living room; mirror scene; 12345 crystal chandelier; 54321 brass floor lamp; T4321 recliner; T4322 ottoman; 01234 area rug; W1234 round mirror; 98765 crystal candlesticks

Many thanks,
Limey

Hi Jerry,
The first part worked for F3 but the lines for F7 and F8 at first gave #Value and then when clicked changed to #N/A
=F3 & IF(C7="", "", C7&";"&D7)
=F7 & IF(C8="", "", ";"&C8&";"&D8)

Any suggestions? Do I need Excel 2010 for this to work?

Limey

Many thanks Jerry! I got it looking really pretty now and hidden column F with all the workings as you suggested. I placed a row at the top that contains the end result (the metadata string).
This is going to be a valuable tool for us and save a lot of headaches!

All the best,
Limey (Paul)

@ limey

Based on your last post it seems that you are satisfied with the solution(s) you've received but you haven't marked your thread as SOLVED. I'll do that for you now but please keep in mind for your future threads that Rule #9 requires you to do that yourself. If your problem has not been solved you can use Thread Tools (located above your first post) and choose "Mark this thread as unsolved".
Thanks.

Also, as a new member of the forum, you may not be aware that you can thank those who have helped you by clicking the small star icon located in the lower left corner of the post in which the help was given. By doing so you can add to the reputation(s) of those who helped.

Thank you Cutter! I'm sorry I didn't mark the thread as solved. As you can see by the time I posted the reply to Jerry it was almost 2am in the morning and I overlooked it the protocol. I would certainly like to add to Jerry's reputation level but I don't see that I have that option any longer. Is it too late?

Jerry, again, thank you!!

Limey (Paul)