I am studying for my CCNA and I need to use the SDM to configure DHCP and other things. I looked at the software page, but I am at a loss on which of the images I need to be able to use SDM. Here is a show ver of my router would like to be able to do crypto to ssh etc.
Cisco IOS Software, 1841 Software (C1841-IPBASE-M), Version 12.4(21), RELEASE SO
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2008 by Cisco Systems, Inc.
Compiled Wed 09-Jul-08 23:45 by prod_rel_team
ROM: System Bootstrap, Version 12.3(8r)T8, RELEASE SOFTWARE (fc1)
TestRouter uptime is 2 hours, 36 minutes
System returned to ROM by power-on
System image file is "flash:c1841-ipbase-mz.124-21.bin"
Cisco 1841 (revision 5.0) with 114688K/16384K bytes of memory.
Processor board ID FCZ093321RV
2 FastEthernet interfaces
1 Serial interface
DRAM configuration is 64 bits wide with parity disabled.
191K bytes of NVRAM.
31360K bytes of ATA CompactFlash (Read/Write)
Configuration register is 0x2102
You should download the latest version (2.5). Once downloaded, extract the files and run setup.exe. You will be prompted to install on your PC or the router or both. Select the appropriate one, run through the install and then select run SDM at the end. If you choose to install to the router you first need to configure some stuff on the router. Here's a link on what you need to do.
Hope that helps.