Best strategy to make .aspx site visible

I am trying several ways, what's the best, what to watch out for?

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Running a .aspx site you realize quickly that bots do not like to mingle deep within what you have crafted.

There are several ways to attack the invisibility issue and invite bots over more aggressively.

1. URL rewrite program, create set of sitemaps with .htm URL referrals.
- dangers
- limits (how many sitemaps, how deep?)
- what to expect

2. Transform all dynamic content into static .htm files.
- need to nofollow, noindex all bots that find, index the dynamic pages
- what to watch out for for the rest?

3. General hints and tips on "statisfying" SE's

Thanks, Cheers, Jens

[mattur]

I suspect that the file extension is a red herring here: .aspx or .htm(l) should not have any effect on spiderability.

It's more likely to be long querystrings or session ids on page urls (correct me if I'm wrong) e.g.
something.aspx?q=123&t=57575&id=1234uuy4 etc

...in which case you need to either use somekind of url-rewriting or revise your site to use urls with only simple (or no) querystrings, and definitely no session id e.g.
something.aspx?q=123

Some aspx applications use javascript client side to postback a form each time a link/button/etc is clicked. If this is the case with your site, you may need to have a site design rethink as such methods will not be navigable to spiders.

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Sorry, yeah, the issue is with the string of course, with my application it is the bla...?id=bla...aspx format that causes trouble.

Anyhoo, the questions remain, what are the several options (you mentioned another, thanks) AND their drawbacks, consequences, etc.

Thanks, jens