There should be several ways to accomplish this, depends on your situation. Does the entire link name change, or only part of it? If the link is "Order Number 10" now, but "Order Number 11" next, then try regular expressions for the dynamic portion. Or, if the layout of the page is static, and the link you want to click is for instance always the first link on this page, change it's description in the object repository to not include the name but include the index instead.
I cannot overemphasis the importance of getting both the introductory and advanced training for this product. These issues are covered in great detail there.