HI Saiteja, I dont know how your application is but, if you think there are other properties of this link with which you can identify it uniquely, you change your your OR. If that is the not the case then may be you can use something like this...
a = Browser("..").Page("..").Link("1.*").GetRoProperty ("name") (assuming name is changing)
again the code above may or may not work for you based on your application.
If the link is dynamic then you need use something to identify it. Since you don't want to use regular expression, the only thing left is to recgonize it based on some other control reference or use some past information (for ex - user who logged in etc...). So what reference can you use in your case?