Got internet, but how do I access my windows server 2003?

Recently my office switched to a new ISP and phone service (comcast). We have (or should have) a static IP.
Mixed wired and wireless access. The internet works but I can't access my server anymore.
Just 5 PCs, I think on a workgroup (not a domain), and 1 server.

Comcast guy is gone. I'm not qualified to fix this but might be able to with your help.

I think my main issue is a lack of understanding about the difference between the IP settings in the modem, vs. the router.
If I am connected wirelessly, and I go to the browser and put in 10.1.10.1, I get the WRT54G router settings page.
If I am connected with wires, and I put in 10.1.10.1, I get the comcast modem settings page.

• The comcast guy wrote down the static IP info, DNS, etc... which of the two settings pages mention above gets this info?

• Right now, the network goes like this:
Internet --> Comcast modem --> big switch in server closet --> server + various PCs + WRT54G wireless router.

Should it be set up differently, maybe Internet --> Modem --> Wireless Router --> Switch?

• What would I plug into the server's TCP/IP properties box? It has just one adapter. I've tried various settings in this box but nobody sees the server. However the server gets online fine. I didn't touch any other server settings.

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My IPconfig (wireless... I don't have wired available from this PC):

Wireless LAN adapter Wireless Network Connection 5:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Linksys AE1000
Physical Address. . . . . . . . . : 68-7F-74-72-27-AA
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::19f2:34ee:24c1:27ea%19(Preferred)
IPv4 Address. . . . . . . . . . . : 10.1.10.102(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Wednesday, November 21, 2012 3:11:31 PM
Lease Expires . . . . . . . . . . : Thursday, November 22, 2012 3:43:46 PM
Default Gateway . . . . . . . . . : 10.1.10.1
DHCP Server . . . . . . . . . . . : 10.1.10.1
DHCPv6 IAID . . . . . . . . . . . : 426278772
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-14-F7-14-6F-90-FB-A6-89-E5-38

DNS Servers . . . . . . . . . . . : 75.75.75.75
75.75.76.76
NetBIOS over Tcpip. . . . . . . . : Enabled

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Is there any other info I can post that might help make sense of all this?