The "Marquee" part of the page is the only one on the page, so you can uniquely identify it simply with the "html tag" property, but it is also inside a frame element that has an html id (NoticeBoard), so I would add that to the code if it were me:
You can check it with a CheckProperty("innertext, "Text to be checked", 0) call, a CheckPoint, or whatever method you prefer.
Code:
MsgBox Browser("micclass:=Browser").Page("micclass:=Page").Frame("html tag:=IFRAME", "html id:=NoticeBoard").WebElement("html tag:=MARQUEE").GetROProperty("innertext")
You can check it with a CheckProperty("innertext, "Text to be checked", 0) call, a CheckPoint, or whatever method you prefer.