i have a website set up on an external server, can any program be placed on my website that would then enable it to hack into my computer - i hope this makes sense.

THANKS pepiNo it does not. Please explain in more depth and with many details about your setup.

A good question usually takes more than one sentence.  
i have my website located on an external server with the COMPANY having access to my email account as they know my password. can a virus be placed into my website so that when I open it it could scan my computer - however I assume that would mean that any computer that openeed my website would also be scanned. the only reason I am asking is that I received an email on my WEBMAIL account that when I had opened the email closed and deleted it and then I reopened it and then I noticed an attached file that was a photo show. This photo slide show at the outset showed a conference table and then individual photo shots of heads, it then showed website pages I had visited and also the photo of an order I had placed over the internet, so was it a viral email that GOT access through my webmail or could my website have had ANYTHING to do with this?

Thanks Pepi