Access the same Loaded Mdi Object from another child

[acess tabcollection of MDi from ChildFor]

HI,
I m creating a windows application having an MDI which has tab control and
menus.
Whenever i m loading a form a new Tabpage gets generated dynaimcally by the
name of the form and the loaded form is collected in a collection. When im
unloading the form I Want the same tab by that form name which is unloaded
should get removed from the tab collection and form should also be removed
from the Form collection. For maintaing the form collection i ve created a
class derived from baseCollection thats working perfectly, But getting error
when i m unloading the form to remove from collection as well as removing the
TabPage from the tabpage collection .Also i m trying to hold the forms on
TabControl as a Subform but not getting the hold of it .
Plz suggest me some valuable solution

Awaneesh.