XP Pro D/T & W2K Laptop wirelessly linked - Networking Failed

[thenoo]

I have achieved a wireless link to the Web on my W2K-SP4 laptop through an external DSL Broadband modem and Linksys Wireless Router connected to my XP Pro-SP2 desktop.

These two computers have the following static I.P.'s assigned:-

Desktop:- 192.168.0.200
DSL modem:-192.168.1.1
Router:- 192.168.0.1
Laptop:- 192.168.0.199

The d/t is named DTOP
The laptop ltop1
Both are members of the same workgroup which is named WORKGROUP

The result of " pinging " these two in cmd.exe is as follows:-

DTOP PING

DSL (I.P.) OK
Router(I.P.) OK
DTOP(using name) OK
DTOP(I.P.) OK

ltop1 PING

DTOP(using name) "not recognised"
DTOP(I.P.) " timed out "
Router(I.P.) " timed out "
DSL (I.P.) OK
ltop1(using name) OK
ltop1(I.P.) OK

When I attempt to enable ICS on the laptop it warns me that doing this will assign the I.P. 192.168.0.1

As this I.P. has already been assigned to the Router I have not enabled ICS on the laptop.

As neither the DTOP or the ltop1 are "seeing" each other I assume this networking has failed.

Can you explain the failure of some of the "ping" attempts here and , hopefully , tell me how I can effect file and printer shares between these two machines , please ?