Cisco VPN :: Getting IPSec Tunnel Established Between 887VA And SRP527W Router?

I'm having some problems getting an ipsec tunnel established between a cisco 887VA router and a cisco srp527w router.I am working from a few text books and some example materials. I have worked through many combinations of what I have got and am still struggling a little bit.I look at debug results and it appears as though the policies do not match between the devices:
 
Jul 23 05:44:37.759: ISAKMP (0): received packet from XXX.XXX.XXX.XXX dport 500 sport 500 Global (R) MM_NO_STATE
 broute1# 
Jul 23 05:44:57.079: ISAKMP:(0):purging SA., sa=85247558, delme=85247558
 broute1# 
Jul 23 05:45:17.031: ISAKMP (0): received packet from XXX.XXX.XXX.XXX dport 500 sport 500 Global (N) NEW SA

[code]....

Some specific questions:
 
1) on the SRP in the example's I have used (and I have a few SRP->SRP VPN's that work) I see you need to enter the preshared key, I'm not seeing in the examples I have used anything about the IKE preshared key on the IOS box. Any examples where you use the preshared key for IKE? I wonder if this is my primary issue as it states clearly in the log that there is no Preshared key :|
 
2) I have used a mish mash of names between the various sections as on the SRP the naming convention isnt the same; ie: which parts of the IPSEC negotiation come from the IKE policy section and which from the IPSEC policy section. Do the names really matter across different ends of the VPN?
 
3) I notice when I perform this command in the(config-crypto-map)#:
 
set peer FQDN

It is converted to:

set peer XXX.XXX.XXX.XXX
 
Is this expected? I want the device to look at the FQDN as this particular host is using DDNS and not use a static IP address.