Split An Existing Proc Into Two.

I know, sounds weird, but I have an existing stored procedure that helps me create a navigational structure for my website.

Table has this structure:
uid - int
IsActive - Smallint
ParentLevel - int
ParentID - int
Name - nvarchar
Description - nvarchar

I added an additional column
DisplayOrder - int

And now I need to add another column named
Type - nvarchar

for a particular reason

The stored proc looks like this.

CREATE procedure hl_GetCategories
AS
SET NOCOUNT ON
SELECT [uid], [Name] FROM Categories WITH(NOLOCK) WHERE ParentLevel = 0 AND uid > 1 ORDER BY DisplayOrder
-- added the filter for uid > 1 so that we only get actual
-- categories and not the reserved blank one.
SELECT [uid],[ParentID],[Name] FROM Categories WITH(NOLOCK) WHERE ParentLevel = 1
-- we are only need the level that is one level deep
GO

And this grabs a list of Categories and 1 Child Level SubCategory that I use to create navigation.

However, my needs have kind of changed. I need to split this proc, or create two different procs to do something similiar.

I need a list of Categories and 1 Child-Level Down where
Type = MainCat (MainCat means a general category)

or
Type = BrandCat (BrandCat means a category with the item Brand Name)

So I can create two different navigational controls.

Any idea on how best to do this?