list(of string) question??? and loop question???

[Kimmy4]

This is just a simple question.
I go through my list and use the value to search a database. Then when i get the results back i remove that value from the list. Now if i then add another item to the list then will it add it to the end or will it put it in the position of the value i removed?
Also i need to loop through that list so that every item is used. At the moment i am using

do
'whatever i need to do
iLengthofList = list1.count - 1
loop while iLengthofList <> 0

where iLengthofList is an integer. Now is there a more efficient way of doing this or is this it when takin into consideration that in the loop i will be changing the length of the list constantly?

Thanks for any advice on either of my questions.

B.T.W I am using .net compact framework 2.0 Windows Mobile 5.0

Thanks again