Hello i am reworking an asp site in asp.net the nav for the current site is essentially a tabstrip-like thing along the top of each page, the nav itself is built using includes so if you click on menu item 4 you go to menuitem4.asp and if you click on menu item 5 you got to menuitem5.asp, etc etc

my initial thought to redoing this nav in asp.net was to use a tabstrip control. but now i'm not so sure its what i need.

Search engine optimisation is very important to the site and i don't think going from being able to spider www.site.com/menuitem1.asp and www.site.com/menuitem2.asp etc

to going to only being able to spider:

www.site.com/default.aspx?menuitem=menuitem1
and
www.site.com/default.aspx?menuitem=menuitem2

won't be very good for the sites search engine optimisation.

So my question is. is the tabstrip the write control for me to use?
Or should i try a different approach? could i try and keep the existing nav?
for example can i use old style aps includes in asp pages? (this immediately sounds like a stupid question)

please help.