How do I configure a C3750-X-12S-S?

We recently purchased a C3750-X-12S-S device. I am having  a brutal time trying to configure it. I've tried:
1. The web interface. Using IE9 on a Windows7 device, the web interface allows me to login, but doesn't load properly. By that I mean, I'll click on something in the left menu and it doesn't fully come up in the right-side pane. Basically rendering it unusable. It did allow me to do Express Setup, but that was about it.
2. The Cisco Network Assitant. When I try to bring it up in CNA (v5.6.3), the device shows as unsupported. A quick check of the Release Notes for CNA shows that it is not listed as one of the supported models of 3750-X device as you can see below:
"Catalyst 3750-X switches (WS-C3750X-24T-L, WS-C3750X-48T-L, WS-C3750X-24P-L, WS-C3750X-48P-L, WS-C3750X-48PF-L, WS-C3750X-24T-S, WS-C3750X-48T-S, WS-C3750X-24P-S, WS-C3750X-48P-S, and WS-C3750X-48PF-S)"
3. When I try to SSH to the device for CLI access, i cannot seem to get on to configure it. I enabled Telnet via the web interface (one of the few things it allowed me to do), but I still cannot telnet either. I tried SSH'ing and it prompted me for login, but I coulnd't get on, using the password I setup in Express Setup. I tried a variety of usernames but no luck.
Probably the best bet is the CLI via console it would seem (although being relatively new to the CiscoIOS, I was hoping for some gui configuration tools!).

All switch models can be configured with four optional network modules. The UPOE, PoE+, and non-PoE switch
models are available with either the LAN Base or IP Base feature set. IP Services feature set is available as an
upgrade option at the time of ordering or through a license at a later time. The GE SFP switch models are
available with either IP Base or IP Services feature set.


For more Cisco information please Check here