Can't PPP_connect to outside world ???

While trying to establish PPP connection as per the PPP_HOWTO, I'm able to connect to my ISP (at least, that's how it looks/sounds like), using minicom (or even seyon). The magic string "CONNECT 31200/ARQ/V34/LAPM/V42BIS" appears, I can login/passwd and the mystery string "~y}#.!}!}....." also appears. The ifconfig & route outputs also look OK:
darkstar:root:/dosc/linux> ifconfig
lo      Link encap:Local Loopback
inet addr:127.0.0.1Bcast:127.255.255.255 Mask:255.0.0.0
UPBROADCASTLOOPBACKRUNNINGMTU:2000 Meric:1
RX packets:718 errors:0 dropped:0 overruns:0
TX packets:718 errors:0 dropped:0 overruns:0
ppp0    Link encap:Point-Point Protocol
inet addr:208.132.190.41 P-t-P:208.132.190.104 Mask:255.255.255.0
UP POINTOPOINT RUNNING  MTU:1500  Metric:1
RX packets:17 errors:0 dropped:0 overruns:0
TX packets:16 errors:0 dropped:0 overruns:0

darkstar:root:/dosc/linux> route -n
Kernel routing table
Destination     Gateway     Genmask         Flags MSS    Window Use Iface
208.132.190.104 *           255.255.255.255 UH    1372   0       16 ppp0
127.0.0.0       *           255.0.0.0       U     1872   0      974 lo

darkstar:root:/dosc/linux> ping 208.132.190.104
PING 208.132.190.104 (208.132.190.104): 56 data bytes
64 bytes from 208.132.190.104: icmp_seq=0 ttl=255 time=393.3 ms
64 bytes from 208.132.190.104: icmp_seq=1 ttl=255 time=340.0 ms
64 bytes from 208.132.190.104: icmp_seq=2 ttl=255 time=350.0 ms
--- 208.132.190.104 ping statistics ---
4 packets transmitted, 3 packets received, 25% packet loss
round-trip min/avg/max = 340.0/361.1/393.3 ms

BUT I STILL CAN'T GET ONTO INTERNET !!! If I try to ping sunsite.unc.edu (as per the HOWTO), I should be able to do so but I am not.
darkstar:root:/dosc/linux> ping sunsite.unc.edu
ping: unknown host sunsite.unc.edu
darkstar:root:/dosc/linux> cat /etc/resolv.conf
domain usinternet.com
nameserver 205.219.138.11

I'm running Slackware 3.0 on Cyrix_166 using USR Sporster Voice 33.6 PnP Fax Internal on Com2 (/dev/cua1).
Please help. (I may be very close but still not there)
Nishi