How to double the net speed (A conceptual question)

MessageHi all,

Now a days i m looking for different approaches among the following to double 
my net speed. Plz do read these different approaches and do tell me whether 
they r applicable or not. Here i would like to mention one thing that i m using 
ISA server on Win2000 server which is the only dhcp and dns server in my LAN 
and i m using dialup account as my primary and only internet connection.

Approach 1:

Install another server as ISA server in addition to the one that i already had 
i.e. use array of ISA server with 2nd server using another dialup account. Will 
this appraoch doubles the internet speed?

Approach 2:

Can I install two modems on my only ISA server and use them both to dial out to 
two different dialup accounts. Is it applicable? and whether it will double my 
internet speed or not?

Approach 3:

 Is there any possibility that i installed two NIC cards in my ISA server one 
connected to internat LAN and other connected to external Lan and i also setup 
a modem and dialup account. Is it possible to use both extenal NIC 
card(connected to external LAN) and dialpup account simultaneously and whether 
it will double my internet speed ot not?

Thanks in advance.

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