I have a domain registered already with a third party can I renew it through you ?

Yes, Provided you have an access to the email address mentioned in the admin content of your domain.

I'm running a web solution company. If I take server space with you can you give me virtual name servers like ns1.mydomain.com, ns2.mydomain.com?

It is easy to give a virtual domain names if your domain is registered with Network Solutions, Domainpeople, Dotregister.com. We have not tried with others yet..

My Pop mail account abc@mydomain.com recives mails but not able to send mails. Why do I face such a problem?

Your Local ISP's does not allow your own SMTP servers for Pop mails. You have to get seperate rights for your SMTP from your ISP.

I have a server space and I have three different clients who will be uploading files into the same space. But these three clients should not be able to view other files. Is it Possible?

Yes, It is possible. This is called password protected directories. We can give you individual login and passwords to each customers so that he uploads and views his own files only. 

I have my site running in another server, But I want to take some services from your server also for the same domain. Is it Possible ?

Yes, There is an 'A' record in every domain. This can be pointed to any server in addition to the name server pointing. This has to be done with your domain registror. Using your domain control password

If You have any more questions it will be answered by our support team. Please send your questions to support@charlieinfotech.com