Additional fields reqd. in VKM4

Hi,

I am facing a requirement from my client in Credit management.I searched forum related to this but couldnot find the solution i needed.

Here we have Dynamic credit management configured as per the attached .

Every time ,sales order gets blocked and user has to go to tcode VKM4 to release it by checking 3 fields CREDIT LIMIT,CREDIT LIMIT USED,OVER/UNDER by going in Environment-->Credit Master sheet 

Now what i need is how can i show above 3 field in VKM4 list output itself so that for multiple orders user can see the limits there itself & decide without

going every time into Environment path.

Is it possible to change in Standard t.code.

kindly guide the steps to achieve above.

Thanks '

jassy