How can I create a Custom List?

[hammerhead13]

I am Looking to Create a Custom list from one that I put an X next to the item in another Column.
For Example I want all the Items i put an "X" in Column B to List those Items in Column D.
[TABLE="width: 500"]
<tbody>[TR]
[TD][/TD]
[TD]A[/TD]
[TD]B[/TD]
[TD]C[/TD]
[TD]D[/TD]
[/TR]
[TR]
[TD]1[/TD]
[TD]Motherboard[/TD]
[TD]X[/TD]
[TD][/TD]
[TD]Motherboard[/TD]
[/TR]
[TR]
[TD]2[/TD]
[TD]RAM[/TD]
[TD]X[/TD]
[TD][/TD]
[TD]RAM[/TD]
[/TR]
[TR]
[TD]3[/TD]
[TD]Video Card[/TD]
[TD][/TD]
[TD][/TD]
[TD]Power Supply[/TD]
[/TR]
[TR]
[TD]4[/TD]
[TD]Power Supply[/TD]
[TD]X[/TD]
[TD][/TD]
[TD][/TD]
[/TR]
</tbody>[/TABLE]

Thanks in Advance!

 

[Fluff]

How about
=IFERROR(INDEX($A$2:$A$5,AGGREGATE(15,6,ROW($A$2:$A$5)-ROW($A$2)+1/($B$2:$B$5="X"),ROWS($1:1))),"")

 

[hammerhead13]

Thank you for the Prompt Reply. I tweaked it and it looks like it is working. Thank you very Much!

 

[Fluff]

You're welcome & thanks for the feedback