Open the doc lib with FrontPage 2003 (FP2003). Then select the "Data
View Details" Task Pane and click on the "Style" option. The second
tab (name slips my mind, sorry) has an option to turn the toolbar  off.

Changing specific  items would require advanced knowledge in
programming of HTML, CSS etc. because you would need to convert the
SharePoint list view into a FP2003 Data View and switch into FP2003
code-view and mangle the source to add/remove such things.

How can I disable  toolbar without using FP2003? I don't have FP2003 at this
time.

I'm not aware of any method to accomplish that without FrontPage 2003,
sorry.

There is a slight chance that you can do this by editing some of the
SharePoint Portal Server/Windows SharePoint Services internal XML
files but this will affect all document  libraries and also requires
full local admin access to the computer.

Also, I am not sure if this is supported and if those changes won't
revert back to the defaults once you apply the soon to be released
Office/SharePoint Service Pack 1.