button in ALV grid display

Hi frenz,

I have a requirement in PS module.The problem is, i am fetching 'lessons learned from the project' from CJ20N tcode which i have to display in ALV.If it is one line or two line i can display in the ALV but if it is of 1 or 2 pages ? here i have to place an icon or button for that and upon clicking that it shud go to that long text(cj20n tcode).pls help me .

reward is guaranteed.

BR,

ANIl.