Paging in commerce server 2007, C# code

CatalogSearchOptions searchOptions = new CatalogSearchOptions();
searchOptions.SetPaging(PageNumber, PageSize);
YourCatalog.GetProducts(searchOptions);//returns a dataset :)

and nice article talks about that below.

http://www.eggheadcafe.com/forumarchives/commerceservercatalog/Nov2005/post24391792.asp