how can we create list columns in custom list through web service in sharepoint 2010

Question

Hi All,

Here,iam trying to create list columns in custom list through web service in sharepoint 2010.Actually i already created a custom list through webservice(/_vti_bin/lists.asmx?)..so after creating i got a default column(Title)..Now i wants to create two more columns through the code using that webservice..

Please Help me...

Thanks in Advance,
Naresh.