Got a pair of queries. Here they go:

1. I had both WSS and SPS installed on my machine. I also had WSS
site collection and a portal site. When i uninstalled SPS, keeping
WSS as such, my WSS site collections stopped functioning(I get
a "Sorry, the page you are looking for can not be found" ERROR).

2. After all this i uninstalled WSS also. Then i deleted all the
Config and Content Databases also.
After all this i started afresh with WSS 2.0 install. I created a
site collection.
Then i installed SPS, it gave me a warning that my WSS sites will be
no more available, i will have to connect to them again using the
Config Databases.
Now how should i get back my site collection, i could find no way
doing this from Central Admin