Two Problems while connecting to Linksys Router

Hi Everyone, I've got what I think is two issues going on at the same time. I'm a former PC IT guy so I'm a bit of a newbie at the Unix/Mac stuff. Be gentle. Problem 1. I'm not sure what the Local Network Mask value should be set to. If I set it up as 255.255.255.0/24 or (1/24), I get the 'Cannot Parse configuration file error'. It seems that it doesn't choke if I just enter 24 or 32 or similar values. What is it I don't understand? Problem 2. The Log from the router seems to indicate that Phase 1 is negotiating OK, but seems to get caught up at Phase 2. Here's a snippit from the log: 2003-07-28 16:46:35 IKE[71] Rx << MM_I1 : 65.93.91.53 SA 2003-07-28 16:46:35 IKE[71] Tx >> MM_R1 : 65.93.91.53 SA 2003-07-28 16:46:35 IKE[71] ISAKMP SA CKI=[9dbc600 cd38d924] CKR=[8f63137 4dcb5b9d] 2003-07-28 16:46:35 IKE[71] ISAKMP SA 3DES / SHA / PreShared / MODP_1024 / 14400 sec (*0 sec) 2003-07-28 16:46:36 IKE[71] Rx << MM_I2 : 65.93.91.53 KE, NONCE, VID 2003-07-28 16:46:36 IKE[71] Tx >> MM_R2 : 65.93.91.53 KE, NONCE 2003-07-28 16:46:36 This connection request matches tunnel 3 setting ! 2003-07-28 16:46:36 IKE[3] Rx << MM_I3 : 65.93.91.53 ID, HASH 2003-07-28 16:46:36 IKE[3] Tx >> MM_R3 : 65.93.91.53 ID, HASH 2003-07-28 16:46:36 IKE[3] Rx << Notify : It simply times out after this last line. Any help would be greatly appreciated. Al